mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/WikiEditor
synced 2024-11-12 09:57:16 +00:00
ab13c162cf
Follows-up 1a2daca06a, which broke this file due to
a bad find/replace action.
Change-Id: Ia6db450296ac579dade2ec4ff116e2519d69c6d3
1394 lines
50 KiB
JavaScript
1394 lines
50 KiB
JavaScript
/* IFrame extension for wikiEditor */
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/*jshint onevar:false, boss:true */
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( function ( $ ) { $.wikiEditor.extensions.iframe = function ( context ) {
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/*
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* Event Handlers
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*
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* These act as filters returning false if the event should be ignored or returning true if it should be passed
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* on to all modules. This is also where we can attach some extra information to the events.
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*/
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context.evt = $.extend( context.evt, {
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/**
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* Filters change events, which occur when the user interacts with the contents of the iframe. The goal of this
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* function is to both classify the scope of changes as 'division' or 'character' and to prevent further
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* processing of events which did not actually change the content of the iframe.
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*/
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keydown: function ( event ) {
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switch ( event.which ) {
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case 90: // z
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case 89: // y
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if ( event.which === 89 && !$.browser.msie ) {
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// only handle y events for IE
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return true;
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} else if ( ( event.ctrlKey || event.metaKey ) && context.history.length ) {
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// HistoryPosition is a negative number between -1 and -context.history.length, in other words
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// it's the number of steps backwards from the latest state.
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var newPosition;
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if ( event.shiftKey || event.which === 89 ) {
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// Redo
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newPosition = context.historyPosition + 1;
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} else {
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// Undo
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newPosition = context.historyPosition - 1;
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}
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// Only act if we are switching to a valid state
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if ( newPosition >= ( context.history.length * -1 ) && newPosition < 0 ) {
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// Make sure we run the history storing code before we make this change
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context.fn.updateHistory( context.oldDelayedHTML !== context.$content.html() );
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context.oldDelayedHistoryPosition = context.historyPosition;
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context.historyPosition = newPosition;
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// Change state
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// FIXME: Destroys event handlers, will be a problem with template folding
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context.$content.html(
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context.history[context.history.length + context.historyPosition].html
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);
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context.fn.purgeOffsets();
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if( context.history[context.history.length + context.historyPosition].sel ) {
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context.fn.setSelection( {
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start: context.history[context.history.length + context.historyPosition].sel[0],
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end: context.history[context.history.length + context.historyPosition].sel[1]
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} );
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}
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}
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// Prevent the browser from jumping in and doing its stuff
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return false;
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}
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break;
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// Intercept all tab events to provide consisten behavior across browsers
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// Webkit browsers insert tab characters by default into the iframe rather than changing input focus
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case 9: //tab
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// if any modifier keys are pressed, allow the browser to do it's thing
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if ( event.ctrlKey || event.altKey || event.shiftKey ) {
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return true;
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} else {
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var $tabindexList = $( '[tabindex]:visible' ).sort( function( a, b ) {
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return a.tabIndex - b.tabIndex;
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} );
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for ( var i=0; i < $tabindexList.length; i++ ) {
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if ( $tabindexList.eq( i ).attr( 'id' ) === context.$iframe.attr( 'id' ) ) {
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$tabindexList.get( i + 1 ).focus();
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break;
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}
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}
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return false;
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}
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break;
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case 86: //v
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if ( event.ctrlKey && $.browser.msie && 'paste' in context.evt ) {
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//paste, intercepted for IE
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context.evt.paste( event );
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}
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break;
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}
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return true;
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},
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change: function ( event ) {
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event.data.scope = 'division';
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var newHTML = context.$content.html();
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if ( context.oldHTML !== newHTML ) {
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context.fn.purgeOffsets();
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context.oldHTML = newHTML;
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event.data.scope = 'realchange';
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}
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// Never let the body be totally empty
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if ( context.$content.children().length === 0 ) {
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context.$content.append( '<p></p>' );
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}
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return true;
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},
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delayedChange: function ( event ) {
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event.data.scope = 'division';
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var newHTML = context.$content.html();
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if ( context.oldDelayedHTML !== newHTML ) {
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context.oldDelayedHTML = newHTML;
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event.data.scope = 'realchange';
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// Surround by <p> if it does not already have it
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var cursorPos = context.fn.getCaretPosition();
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var t = context.fn.getOffset( cursorPos[0] );
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if ( ! $.browser.msie && t && t.node.nodeName === '#text' && t.node.parentNode.nodeName.toLowerCase() === 'body' ) {
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$( t.node ).wrap( '<p></p>' );
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context.fn.purgeOffsets();
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context.fn.setSelection( { start: cursorPos[0], end: cursorPos[1] } );
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}
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}
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context.fn.updateHistory( event.data.scope === 'realchange' );
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return true;
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},
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cut: function ( event ) {
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setTimeout( function() {
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context.$content.find( 'br' ).each( function() {
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if ( $(this).parent().is( 'body' ) ) {
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$(this).wrap( $( '<p></p>' ) );
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}
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} );
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}, 100 );
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return true;
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},
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paste: function ( event ) {
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// Save the cursor position to restore it after all this voodoo
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var cursorPos = context.fn.getCaretPosition();
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var oldLength = context.fn.getContents().length;
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var positionFromEnd = oldLength - cursorPos[1];
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//give everything the wikiEditor class so that we can easily pick out things without that class as pasted
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context.$content.find( '*' ).addClass( 'wikiEditor' );
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if ( $.layout.name !== 'webkit' ) {
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context.$content.addClass( 'pasting' );
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}
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setTimeout( function() {
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/*jshint eqnull:true */
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// Kill stuff we know we don't want
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context.$content.find( 'script,style,img,input,select,textarea,hr,button,link,meta' ).remove();
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var nodeToDelete = [];
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var pastedContent = [];
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var firstDirtyNode;
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var $lastDirtyNode;
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var elementAtCursor;
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if ( $.browser.msie && !context.offsets ) {
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elementAtCursor = null;
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} else {
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elementAtCursor = context.fn.getOffset( cursorPos[0] );
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}
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if ( elementAtCursor == null || elementAtCursor.node == null ) {
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context.$content.prepend( '<p class = wikiEditor></p>' );
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firstDirtyNode = context.$content.children()[0];
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} else {
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firstDirtyNode = elementAtCursor.node;
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}
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// This is ugly but seems like the best way to handle the case where we select and replace all editor contents
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try {
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/*jshint expr:true */
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firstDirtyNode.parentNode;
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} catch ( err ) {
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context.$content.prepend( '<p class = wikiEditor></p>' );
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firstDirtyNode = context.$content.children()[0];
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}
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while ( firstDirtyNode != null ) {
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//we're going to replace the contents of the entire parent node.
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while ( firstDirtyNode.parentNode && firstDirtyNode.parentNode.nodeName !== 'BODY' &&
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!$( firstDirtyNode ).hasClass( 'wikiEditor' )
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) {
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firstDirtyNode = firstDirtyNode.parentNode;
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}
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//go back till we find the first pasted node
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while ( firstDirtyNode.previousSibling != null &&
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!$( firstDirtyNode.previousSibling ).hasClass( 'wikiEditor' )
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) {
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if ( $( firstDirtyNode.previousSibling ).hasClass( '#comment' ) ) {
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$( firstDirtyNode ).remove();
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} else {
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firstDirtyNode = firstDirtyNode.previousSibling;
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}
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}
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if ( firstDirtyNode.previousSibling != null ) {
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$lastDirtyNode = $( firstDirtyNode.previousSibling );
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} else {
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$lastDirtyNode = $( firstDirtyNode );
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}
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var cc = makeContentCollector( $.browser, null );
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while ( firstDirtyNode != null ) {
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cc.collectContent(firstDirtyNode);
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cc.notifyNextNode(firstDirtyNode.nextSibling);
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nodeToDelete.push( firstDirtyNode );
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firstDirtyNode = firstDirtyNode.nextSibling;
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if ( $( firstDirtyNode ).hasClass( 'wikiEditor' ) ) {
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break;
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}
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}
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var ccData = cc.finish();
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pastedContent = ccData.lines;
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var pastedPretty = '';
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for ( var i = 0; i < pastedContent.length; i++ ) {
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//escape html
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pastedPretty = pastedContent[i].replace(/&/g, '&').replace(/</g, '<').replace(/>/g, '>').replace(/\r?\n/g, '\\n');
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//replace leading white spaces with
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match = pastedContent[i].match(/^[\s]+[^\s]/);
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if ( match != null && match.length > 0 ) {
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index = match[0].length;
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leadingSpace = match[0].replace(/[\s]/g, ' ');
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pastedPretty = leadingSpace + pastedPretty.substring(index, pastedPretty.length);
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}
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if ( !pastedPretty && $.browser.msie && i === 0 ) {
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continue;
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}
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$newElement = $( '<p class="wikiEditor pasted" ></p>' );
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if ( pastedPretty ) {
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$newElement.html( pastedPretty );
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} else {
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$newElement.html( '<br class="wikiEditor">' );
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}
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$newElement.insertAfter( $lastDirtyNode );
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$lastDirtyNode = $newElement;
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}
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//now delete all the original nodes that we prettified already
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while ( nodeToDelete.length > 0 ) {
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$deleteNode = $( nodeToDelete.pop() );
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$deleteNode.remove();
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}
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//anything without wikiEditor class was pasted.
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$selection = context.$content.find( ':not(.wikiEditor)' );
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if ( $selection.length === 0 ) {
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break;
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} else {
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firstDirtyNode = $selection.eq( 0 )[0];
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}
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}
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context.$content.find( '.wikiEditor' ).removeClass( 'wikiEditor' );
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//now place the cursor at the end of pasted content
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var newLength = context.fn.getContents().length;
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var newPos = newLength - positionFromEnd;
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context.fn.purgeOffsets();
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context.fn.setSelection( { start: newPos, end: newPos } );
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context.fn.scrollToCaretPosition();
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}, 0 );
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return true;
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},
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ready: function ( event ) {
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// Initialize our history queue
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if ( context.$content ) {
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context.history.push( { 'html': context.$content.html(), 'sel': context.fn.getCaretPosition() } );
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} else {
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context.history.push( { 'html': '', 'sel': context.fn.getCaretPosition() } );
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}
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return true;
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}
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} );
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/**
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* Internally used functions
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*/
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context.fn = $.extend( context.fn, {
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/**
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* @param {jQuery} $element
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* @param mode
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*/
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highlightLine: function ( $element ) {
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if ( !$element.is( 'p' ) ) {
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$element = $element.closest( 'p' );
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}
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$element.css( 'backgroundColor', '#AACCFF' );
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setTimeout( function() { $element.animate( { 'backgroundColor': 'white' }, 'slow' ); }, 100 );
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setTimeout( function() { $element.css( 'backgroundColor', 'white' ); }, 1000 );
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},
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htmlToText: function ( html ) {
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// This function is slow for large inputs, so aggressively cache input/output pairs
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if ( html in context.htmlToTextMap ) {
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return context.htmlToTextMap[html];
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}
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var origHTML = html;
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// We use this elaborate trickery for cross-browser compatibility
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// IE does overzealous whitespace collapsing for $( '<pre />' ).html( html );
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// We also do <br> and easy cases for <p> conversion here, complicated cases are handled later
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html = html
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.replace( /\r?\n/g, '' ) // IE7 inserts newlines before block elements
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.replace( / /g, ' ' ) // We inserted these to prevent IE from collapsing spaces
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.replace( /<br[^\>]*\><\/p\>/gi, '</p>' ) // Remove trailing <br> from <p>
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.replace( /<\/p\>\s*<p[^\>]*\>/gi, '\n' ) // Easy case for <p> conversion
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.replace( /<br[^\>]*\>/gi, '\n' ) // <br> conversion
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.replace( /<\/p\>(\n*)<p[^\>]*\>/gi, '$1\n' )
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// Un-nest <p> tags
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.replace( /<p[^\>]*\><p[^\>]*\>/gi, '<p>' )
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.replace( /<\/p\><\/p\>/gi, '</p>' );
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// Save leading and trailing whitespace now and restore it later. IE eats it all, and even Firefox
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// won't leave everything alone
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var leading = html.match( /^\s*/ )[0];
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var trailing = html.match( /\s*$/ )[0];
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html = html.substr( leading.length, html.length - leading.length - trailing.length );
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var $pre = $( '<pre>' + html + '</pre>' );
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$pre.find( '.wikiEditor-noinclude' ).each( function() { $( this ).remove(); } );
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// Convert tabs, <p>s and <br>s back
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$pre.find( '.wikiEditor-tab' ).each( function() { $( this ).text( '\t' ); } );
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$pre.find( 'br' ).each( function() { $( this ).replaceWith( '\n' ); } );
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// Converting <p>s is wrong if there's nothing before them, so check that.
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// .find( '* + p' ) isn't good enough because textnodes aren't considered
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$pre.find( 'p' ).each( function() {
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var text = $( this ).text();
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// If this <p> is preceded by some text, add a \n at the beginning, and if
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// it's followed by a textnode, add a \n at the end
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// We need the traverser because there can be other weird stuff in between
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// Check for preceding text
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var t = new context.fn.rawTraverser( this.firstChild, this, $pre.get( 0 ), true ).prev();
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while ( t && t.node.nodeName !== '#text' && t.node.nodeName !== 'BR' && t.node.nodeName !== 'P' ) {
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t = t.prev();
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}
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if ( t ) {
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text = '\n' + text;
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}
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// Check for following text
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t = new context.fn.rawTraverser( this.lastChild, this, $pre.get( 0 ), true ).next();
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while ( t && t.node.nodeName !== '#text' && t.node.nodeName !== 'BR' && t.node.nodeName !== 'P' ) {
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t = t.next();
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}
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if ( t && !t.inP && t.node.nodeName === '#text' && t.node.nodeValue.charAt( 0 ) !== '\n' &&
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t.node.nodeValue.charAt( 0 ) !== '\r' ) {
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text += '\n';
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}
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$( this ).text( text );
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} );
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var retval;
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if ( $.browser.msie ) {
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// IE aggressively collapses whitespace in .text() after having done DOM manipulation,
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// but for some crazy reason this does work. Also convert \r back to \n
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retval = $( '<pre>' + $pre.html() + '</pre>' ).text().replace( /\r/g, '\n' );
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} else {
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retval = $pre.text();
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}
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return context.htmlToTextMap[origHTML] = leading + retval + trailing;
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},
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/**
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* Get the first element before the selection that's in a certain class
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* @param classname Class to match. Defaults to '', meaning any class
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* @param strict If true, the element the selection starts in cannot match (default: false)
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* @return jQuery object or null if unknown
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*/
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beforeSelection: function ( classname, strict ) {
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if ( typeof classname === 'undefined' ) {
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classname = '';
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}
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var e = null, offset = null;
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if ( $.browser.msie && !context.$iframe[0].contentWindow.document.body ) {
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return null;
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}
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if ( context.$iframe[0].contentWindow.getSelection ) {
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// Firefox and Opera
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var selection = context.$iframe[0].contentWindow.getSelection();
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// On load, webkit seems to not have a valid selection
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if ( selection.baseNode !== null ) {
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// Start at the selection's start and traverse the DOM backwards
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// This is done by traversing an element's children first, then the element itself, then its parent
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e = selection.getRangeAt( 0 ).startContainer;
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offset = selection.getRangeAt( 0 ).startOffset;
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} else {
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return null;
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}
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// When the cursor is on an empty line, Opera gives us a bogus range object with
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// startContainer=endContainer=body and startOffset=endOffset=1
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var body = context.$iframe[0].contentWindow.document.body;
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if ( $.browser.opera && e === body && offset === 1 ) {
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return null;
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}
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}
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if ( !e && context.$iframe[0].contentWindow.document.selection ) {
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// IE
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// Because there's nothing like range.startContainer in IE, we need to do a DOM traversal
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// to find the element the start of the selection is in
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var range = context.$iframe[0].contentWindow.document.selection.createRange();
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// Set range2 to the text before the selection
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var range2 = context.$iframe[0].contentWindow.document.body.createTextRange();
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// For some reason this call throws errors in certain cases, e.g. when the selection is
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// not in the iframe
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try {
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range2.setEndPoint( 'EndToStart', range );
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} catch ( ex ) {
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return null;
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}
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var seekPos = context.fn.htmlToText( range2.htmlText ).length;
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offset = context.fn.getOffset( seekPos );
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e = offset ? offset.node : null;
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offset = offset ? offset.offset : null;
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if ( !e ) {
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return null;
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}
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}
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if ( e.nodeName !== '#text' ) {
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// The selection is not in a textnode, but between two non-text nodes
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// (usually inside the <body> between two <br>s). Go to the rightmost
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// child of the node just before the selection
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var newE = e.firstChild;
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for ( var i = 0; i < offset - 1 && newE; i++ ) {
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newE = newE.nextSibling;
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}
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while ( newE && newE.lastChild ) {
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newE = newE.lastChild;
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}
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e = newE || e;
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}
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// We'd normally use if( $( e ).hasClass( class ) in the while loop, but running the jQuery
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// constructor thousands of times is very inefficient
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var classStr = ' ' + classname + ' ';
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while ( e ) {
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if ( !strict && ( !classname || ( ' ' + e.className + ' ' ).indexOf( classStr ) !== -1 ) ) {
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return $( e );
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}
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var next = e.previousSibling;
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while ( next && next.lastChild ) {
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next = next.lastChild;
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}
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e = next || e.parentNode;
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strict = false;
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}
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return $( [] );
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},
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/**
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* Object used by traverser(). Don't use this unless you know what you're doing
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*/
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rawTraverser: function ( node, inP, ancestor, skipNoinclude ) {
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this.node = node;
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this.inP = inP;
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this.ancestor = ancestor;
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this.skipNoinclude = skipNoinclude;
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this.next = function() {
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var p = this.node;
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var nextInP = this.inP;
|
|
while ( p && !p.nextSibling ) {
|
|
p = p.parentNode;
|
|
if ( p === this.ancestor ) {
|
|
// We're back at the ancestor, stop here
|
|
p = null;
|
|
}
|
|
if ( p && p.nodeName === 'P' ) {
|
|
nextInP = null;
|
|
}
|
|
}
|
|
p = p ? p.nextSibling : null;
|
|
if ( p && p.nodeName === 'P' ) {
|
|
nextInP = p;
|
|
}
|
|
do {
|
|
// Filter nodes with the wikiEditor-noinclude class
|
|
// Don't use $( p ).hasClass( 'wikiEditor-noinclude' ) because
|
|
// $() is slow in a tight loop
|
|
if ( this.skipNoinclude ) {
|
|
while ( p && ( ' ' + p.className + ' ' ).indexOf( ' wikiEditor-noinclude ' ) !== -1 ) {
|
|
p = p.nextSibling;
|
|
}
|
|
}
|
|
if ( p && p.firstChild ) {
|
|
p = p.firstChild;
|
|
if ( p.nodeName === 'P' ) {
|
|
nextInP = p;
|
|
}
|
|
}
|
|
} while ( p && p.firstChild );
|
|
// Instead of calling the rawTraverser constructor, inline it. This avoids function call overhead
|
|
return p ? { 'node': p, 'inP': nextInP, 'ancestor': this.ancestor,
|
|
'skipNoinclude': this.skipNoinclude, 'next': this.next, 'prev': this.prev } : null;
|
|
};
|
|
this.prev = function() {
|
|
var p = this.node;
|
|
var prevInP = this.inP;
|
|
while ( p && !p.previousSibling ) {
|
|
p = p.parentNode;
|
|
if ( p === this.ancestor ) {
|
|
// We're back at the ancestor, stop here
|
|
p = null;
|
|
}
|
|
if ( p && p.nodeName === 'P' ) {
|
|
prevInP = null;
|
|
}
|
|
}
|
|
p = p ? p.previousSibling : null;
|
|
if ( p && p.nodeName === 'P' ) {
|
|
prevInP = p;
|
|
}
|
|
do {
|
|
// Filter nodes with the wikiEditor-noinclude class
|
|
// Don't use $( p ).hasClass( 'wikiEditor-noinclude' ) because
|
|
// $() is slow in a tight loop
|
|
if ( this.skipNoinclude ) {
|
|
while ( p && ( ' ' + p.className + ' ' ).indexOf( ' wikiEditor-noinclude ' ) != -1 ) {
|
|
p = p.previousSibling;
|
|
}
|
|
}
|
|
if ( p && p.lastChild ) {
|
|
p = p.lastChild;
|
|
if ( p.nodeName == 'P' ) {
|
|
prevInP = p;
|
|
}
|
|
}
|
|
} while ( p && p.lastChild );
|
|
// Instead of calling the rawTraverser constructor, inline it. This avoids function call overhead
|
|
return p ? { 'node': p, 'inP': prevInP, 'ancestor': this.ancestor,
|
|
'skipNoinclude': this.skipNoinclude, 'next': this.next, 'prev': this.prev } : null;
|
|
};
|
|
},
|
|
/**
|
|
* Get an object used to traverse the leaf nodes in the iframe DOM. This traversal skips leaf nodes
|
|
* inside an element with the wikiEditor-noinclude class. This basically wraps rawTraverser
|
|
*
|
|
* @param start Node to start at
|
|
* @return Traverser object, use .next() or .prev() to get a traverser object referring to the
|
|
* previous/next node
|
|
*/
|
|
traverser: function ( start ) {
|
|
// Find the leftmost leaf node in the tree
|
|
var startNode = start.jquery ? start.get( 0 ) : start;
|
|
var node = startNode;
|
|
var inP = node.nodeName === 'P' ? node : null;
|
|
do {
|
|
// Filter nodes with the wikiEditor-noinclude class
|
|
// Don't use $( p ).hasClass( 'wikiEditor-noinclude' ) because
|
|
// $() is slow in a tight loop
|
|
while ( node && ( ' ' + node.className + ' ' ).indexOf( ' wikiEditor-noinclude ' ) !== -1 ) {
|
|
node = node.nextSibling;
|
|
}
|
|
if ( node && node.firstChild ) {
|
|
node = node.firstChild;
|
|
if ( node.nodeName === 'P' ) {
|
|
inP = node;
|
|
}
|
|
}
|
|
} while ( node && node.firstChild );
|
|
return new context.fn.rawTraverser( node, inP, startNode, true );
|
|
},
|
|
getOffset: function ( offset ) {
|
|
if ( !context.offsets ) {
|
|
context.fn.refreshOffsets();
|
|
}
|
|
if ( offset in context.offsets ) {
|
|
return context.offsets[offset];
|
|
}
|
|
// Our offset is not pre-cached. Find the highest offset below it and interpolate
|
|
// We need to traverse the entire object because for() doesn't traverse in order
|
|
// We don't do in-order traversal because the object is sparse
|
|
var lowerBound = -1;
|
|
for ( var o in context.offsets ) {
|
|
var realO = parseInt( o );
|
|
if ( realO < offset && realO > lowerBound) {
|
|
lowerBound = realO;
|
|
}
|
|
}
|
|
if ( !( lowerBound in context.offsets ) ) {
|
|
// Weird edge case: either offset is too large or the document is empty
|
|
return null;
|
|
}
|
|
var base = context.offsets[lowerBound];
|
|
return context.offsets[offset] = {
|
|
'node': base.node,
|
|
'offset': base.offset + offset - lowerBound,
|
|
'length': base.length,
|
|
'lastTextNode': base.lastTextNode
|
|
};
|
|
},
|
|
purgeOffsets: function () {
|
|
context.offsets = null;
|
|
},
|
|
refreshOffsets: function () {
|
|
context.offsets = [ ];
|
|
var t = context.fn.traverser( context.$content );
|
|
var pos = 0, lastTextNode = null;
|
|
while ( t ) {
|
|
if ( t.node.nodeName !== '#text' && t.node.nodeName !== 'BR' ) {
|
|
t = t.next();
|
|
continue;
|
|
}
|
|
var nextPos = t.node.nodeName === '#text' ? pos + t.node.nodeValue.length : pos + 1;
|
|
var nextT = t.next();
|
|
var leavingP = t.node.nodeName === '#text' && t.inP && nextT && ( !nextT.inP || nextT.inP !== t.inP );
|
|
context.offsets[pos] = {
|
|
'node': t.node,
|
|
'offset': 0,
|
|
'length': nextPos - pos + ( leavingP ? 1 : 0 ),
|
|
'lastTextNode': lastTextNode
|
|
};
|
|
if ( leavingP ) {
|
|
// <p>Foo</p> looks like "Foo\n", make it quack like it too
|
|
// Basically we're faking the \n character much like we're treating <br>s
|
|
context.offsets[nextPos] = {
|
|
'node': t.node,
|
|
'offset': nextPos - pos,
|
|
'length': nextPos - pos + 1,
|
|
'lastTextNode': lastTextNode
|
|
};
|
|
}
|
|
pos = nextPos + ( leavingP ? 1 : 0 );
|
|
if ( t.node.nodeName === '#text' ) {
|
|
lastTextNode = t.node;
|
|
}
|
|
t = nextT;
|
|
}
|
|
},
|
|
saveCursorAndScrollTop: function () {
|
|
// Stub out textarea behavior
|
|
return;
|
|
},
|
|
restoreCursorAndScrollTop: function () {
|
|
// Stub out textarea behavior
|
|
return;
|
|
},
|
|
saveSelection: function () {
|
|
if ( $.client.profile().name === 'msie' ) {
|
|
context.$iframe[0].contentWindow.focus();
|
|
context.savedSelection = context.$iframe[0].contentWindow.document.selection.createRange();
|
|
}
|
|
},
|
|
restoreSelection: function () {
|
|
if ( $.client.profile().name === 'msie' && context.savedSelection !== null ) {
|
|
context.$iframe[0].contentWindow.focus();
|
|
context.savedSelection.select();
|
|
context.savedSelection = null;
|
|
}
|
|
},
|
|
/**
|
|
* Update the history queue
|
|
*
|
|
* @param htmlChange Pass true or false to inidicate if there was a text change that should potentially
|
|
* be given a new history state.
|
|
*/
|
|
updateHistory: function ( htmlChange ) {
|
|
var newHTML = context.$content.html();
|
|
var newSel = context.fn.getCaretPosition();
|
|
// Was text changed? Was it because of a REDO or UNDO action?
|
|
if (
|
|
context.history.length == 0 ||
|
|
( htmlChange && context.oldDelayedHistoryPosition == context.historyPosition )
|
|
) {
|
|
context.oldDelayedSel = newSel;
|
|
// Do we need to trim extras from our history?
|
|
// FIXME: this should really be happing on change, not on the delay
|
|
if ( context.historyPosition < -1 ) {
|
|
//clear out the extras
|
|
context.history.splice( context.history.length + context.historyPosition + 1 );
|
|
context.historyPosition = -1;
|
|
}
|
|
context.history.push( { 'html': newHTML, 'sel': newSel } );
|
|
// If the history has grown longer than 10 items, remove the earliest one
|
|
while ( context.history.length > 10 ) {
|
|
context.history.shift();
|
|
}
|
|
} else if ( context.oldDelayedSel != newSel ) {
|
|
// If only the selection was changed, update it
|
|
context.oldDelayedSel = newSel;
|
|
context.history[context.history.length + context.historyPosition].sel = newSel;
|
|
}
|
|
// synch our old delayed history position until the next undo/redo action
|
|
context.oldDelayedHistoryPosition = context.historyPosition;
|
|
},
|
|
/**
|
|
* Sets up the iframe in place of the textarea to allow more advanced operations
|
|
*/
|
|
setupIframe: function () {
|
|
context.$iframe = $( '<iframe></iframe>' )
|
|
.attr( {
|
|
'frameBorder': 0,
|
|
'border': 0,
|
|
'tabindex': 1,
|
|
'src': mw.config.get( 'wgExtensionAssetsPath' ) + '/WikiEditor/modules/jquery.wikiEditor.html?' +
|
|
'instance=' + context.instance + '&ts=' + ( new Date() ).getTime() + '&is=content',
|
|
'id': 'wikiEditor-iframe-' + context.instance
|
|
} )
|
|
.css( {
|
|
'backgroundColor': 'white',
|
|
'width': '100%',
|
|
'height': context.$textarea.height(),
|
|
'display': 'none',
|
|
'overflow-y': 'scroll',
|
|
'overflow-x': 'hidden'
|
|
} )
|
|
.insertAfter( context.$textarea )
|
|
.load( function() {
|
|
// Internet Explorer will reload the iframe once we turn on design mode, so we need to only turn it
|
|
// on during the first run, and then bail
|
|
if ( !this.isSecondRun ) {
|
|
// Turn the document's design mode on
|
|
context.$iframe[0].contentWindow.document.designMode = 'on';
|
|
// Let the rest of this function happen next time around
|
|
if ( $.browser.msie ) {
|
|
this.isSecondRun = true;
|
|
return;
|
|
}
|
|
}
|
|
// Get a reference to the content area of the iframe
|
|
context.$content = $( context.$iframe[0].contentWindow.document.body );
|
|
// Add classes to the body to influence the styles based on what's enabled
|
|
for ( module in context.modules ) {
|
|
context.$content.addClass( 'wikiEditor-' + module );
|
|
}
|
|
// If we just do "context.$content.text( context.$textarea.val() )", Internet Explorer will strip
|
|
// out the whitespace charcters, specifically "\n" - so we must manually encode text and append it
|
|
// TODO: Refactor this into a textToHtml() function
|
|
var html = context.$textarea.val()
|
|
// We're gonna use &esc; as an escape sequence
|
|
.replace( /&esc;/g, '&esc;esc;' )
|
|
// Escape existing uses of <p>, </p>, and <span class="wikiEditor-tab"></span>
|
|
.replace( /\<p\>/g, '&esc;<p>' )
|
|
.replace( /\<\/p\>/g, '&esc;</p>' )
|
|
.replace(
|
|
/\<span class="wikiEditor-tab"\>\<\/span\>/g,
|
|
'&esc;<span class="wikiEditor-tab"></span>'
|
|
)
|
|
.replace( / /g, '&esc;&nbsp;' );
|
|
// We must do some extra processing on IE to avoid dirty diffs, specifically IE will collapse
|
|
// leading spaces - browser sniffing is not ideal, but executing this code on a non-broken browser
|
|
// doesn't cause harm
|
|
if ( $.browser.msie ) {
|
|
html = html.replace( /\t/g, '<span class="wikiEditor-tab"></span>' );
|
|
if ( $.browser.versionNumber <= 7 ) {
|
|
// Replace all spaces matching - IE <= 7 needs this because of its overzealous
|
|
// whitespace collapsing
|
|
html = html.replace( / /g, " " );
|
|
} else {
|
|
// IE8 is happy if we just convert the first leading space to
|
|
html = html.replace( /(^|\n) /g, "$1 " );
|
|
}
|
|
}
|
|
// Use a dummy div to escape all entities
|
|
// This'll also escape <br>, <span> and , so we unescape those after
|
|
// We also need to unescape the doubly-escaped things mentioned above
|
|
html = $( '<div />' ).text( '<p>' + html.replace( /\r?\n/g, '</p><p>' ) + '</p>' ).html()
|
|
.replace( /&nbsp;/g, ' ' )
|
|
// Allow <p> tags to survive encoding
|
|
.replace( /<p>/g, '<p>' )
|
|
.replace( /<\/p>/g, '</p>' )
|
|
// And <span class="wikiEditor-tab"></span> too
|
|
.replace(
|
|
/<span( | )class=("|")wikiEditor-tab("|")><\/span>/g,
|
|
'<span class="wikiEditor-tab"></span>'
|
|
)
|
|
// Empty <p> tags need <br> tags in them
|
|
.replace( /<p><\/p>/g, '<p><br></p>' )
|
|
// Unescape &esc; stuff
|
|
.replace( /&esc;&amp;nbsp;/g, '&nbsp;' )
|
|
.replace( /&esc;&lt;p&gt;/g, '<p>' )
|
|
.replace( /&esc;&lt;\/p&gt;/g, '</p>' )
|
|
.replace(
|
|
/&esc;&lt;span&nbsp;class=&quot;wikiEditor-tab&quot;&gt;&lt;\/span&gt;/g,
|
|
'<span class="wikiEditor-tab"><\/span>'
|
|
)
|
|
.replace( /&esc;esc;/g, '&esc;' );
|
|
context.$content.html( html );
|
|
|
|
// Reflect direction of parent frame into child
|
|
if ( $( 'body' ).is( '.rtl' ) ) {
|
|
context.$content.addClass( 'rtl' ).attr( 'dir', 'rtl' );
|
|
}
|
|
// Activate the iframe, encoding the content of the textarea and copying it to the content of iframe
|
|
context.$textarea.attr( 'disabled', true );
|
|
context.$textarea.hide();
|
|
context.$iframe.show();
|
|
// Let modules know we're ready to start working with the content
|
|
context.fn.trigger( 'ready' );
|
|
// Only save HTML now: ready handlers may have modified it
|
|
context.oldHTML = context.oldDelayedHTML = context.$content.html();
|
|
//remove our temporary loading
|
|
/* Disaling our loading div for now
|
|
$( '.wikiEditor-ui-loading' ).fadeOut( 'fast', function() {
|
|
$( this ).remove();
|
|
} );
|
|
*/
|
|
// Setup event handling on the iframe
|
|
$( context.$iframe[0].contentWindow.document )
|
|
.bind( 'keydown', function( event ) {
|
|
event.jQueryNode = context.fn.getElementAtCursor();
|
|
return context.fn.trigger( 'keydown', event );
|
|
|
|
} )
|
|
.bind( 'keyup', function( event ) {
|
|
event.jQueryNode = context.fn.getElementAtCursor();
|
|
return context.fn.trigger( 'keyup', event );
|
|
} )
|
|
.bind( 'keypress', function( event ) {
|
|
event.jQueryNode = context.fn.getElementAtCursor();
|
|
return context.fn.trigger( 'keypress', event );
|
|
} )
|
|
.bind( 'paste', function( event ) {
|
|
return context.fn.trigger( 'paste', event );
|
|
} )
|
|
.bind( 'cut', function( event ) {
|
|
return context.fn.trigger( 'cut', event );
|
|
} )
|
|
.bind( 'keyup paste mouseup cut encapsulateSelection', function( event ) {
|
|
return context.fn.trigger( 'change', event );
|
|
} )
|
|
.delayedBind( 250, 'keyup paste mouseup cut encapsulateSelection', function( event ) {
|
|
context.fn.trigger( 'delayedChange', event );
|
|
} );
|
|
} );
|
|
// Attach a submit handler to the form so that when the form is submitted the content of the iframe gets
|
|
// decoded and copied over to the textarea
|
|
context.$textarea.closest( 'form' ).submit( function() {
|
|
context.$textarea.attr( 'disabled', false );
|
|
context.$textarea.val( context.$textarea.textSelection( 'getContents' ) );
|
|
} );
|
|
/* FIXME: This was taken from EditWarning.js - maybe we could do a jquery plugin for this? */
|
|
// Attach our own handler for onbeforeunload which respects the current one
|
|
context.fallbackWindowOnBeforeUnload = window.onbeforeunload;
|
|
window.onbeforeunload = function() {
|
|
context.$textarea.val( context.$textarea.textSelection( 'getContents' ) );
|
|
if ( context.fallbackWindowOnBeforeUnload ) {
|
|
return context.fallbackWindowOnBeforeUnload();
|
|
}
|
|
};
|
|
},
|
|
|
|
/**
|
|
* Compatibility with the $.textSelection jQuery plug-in. When the iframe is in use, these functions provide
|
|
* equivilant functionality to the otherwise textarea-based functionality.
|
|
*/
|
|
|
|
getElementAtCursor: function () {
|
|
if ( context.$iframe[0].contentWindow.getSelection ) {
|
|
// Firefox and Opera
|
|
var selection = context.$iframe[0].contentWindow.getSelection();
|
|
if ( selection.rangeCount == 0 ) {
|
|
// We don't know where the cursor is
|
|
return $( [] );
|
|
}
|
|
var sc = selection.getRangeAt( 0 ).startContainer;
|
|
if ( sc.nodeName == "#text" ) sc = sc.parentNode;
|
|
return $( sc );
|
|
} else if ( context.$iframe[0].contentWindow.document.selection ) { // should come last; Opera!
|
|
// IE
|
|
var selection = context.$iframe[0].contentWindow.document.selection.createRange();
|
|
return $( selection.parentElement() );
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Gets the complete contents of the iframe (in plain text, not HTML)
|
|
*/
|
|
getContents: function () {
|
|
// For <p></p>, .html() returns <p> </p> in IE
|
|
// This seems to convince IE while not affecting display
|
|
if ( !context.$content ) {
|
|
return '';
|
|
}
|
|
var html;
|
|
if ( $.browser.msie ) {
|
|
// Don't manipulate the iframe DOM itself, causes cursor jumping issues
|
|
var $c = $( context.$content.get( 0 ).cloneNode( true ) );
|
|
$c.find( 'p' ).each( function() {
|
|
if ( $(this).html() == '' ) {
|
|
$(this).replaceWith( '<p></p>' );
|
|
}
|
|
} );
|
|
html = $c.html();
|
|
} else {
|
|
html = context.$content.html();
|
|
}
|
|
return context.fn.htmlToText( html );
|
|
},
|
|
/**
|
|
* Gets the currently selected text in the content
|
|
* DO NOT CALL THIS DIRECTLY, use $.textSelection( 'functionname', options ) instead
|
|
*/
|
|
getSelection: function () {
|
|
var retval;
|
|
if ( context.$iframe[0].contentWindow.getSelection ) {
|
|
// Firefox and Opera
|
|
retval = context.$iframe[0].contentWindow.getSelection();
|
|
if ( $.browser.opera ) {
|
|
// Opera strips newlines in getSelection(), so we need something more sophisticated
|
|
if ( retval.rangeCount > 0 ) {
|
|
retval = context.fn.htmlToText( $( '<pre />' )
|
|
.append( retval.getRangeAt( 0 ).cloneContents() )
|
|
.html()
|
|
);
|
|
} else {
|
|
retval = '';
|
|
}
|
|
}
|
|
} else if ( context.$iframe[0].contentWindow.document.selection ) { // should come last; Opera!
|
|
// IE
|
|
retval = context.$iframe[0].contentWindow.document.selection.createRange();
|
|
}
|
|
if ( typeof retval.text != 'undefined' ) {
|
|
// In IE8, retval.text is stripped of newlines, so we need to process retval.htmlText
|
|
// to get a reliable answer. IE7 does get this right though
|
|
// Run this fix for all IE versions anyway, it doesn't hurt
|
|
retval = context.fn.htmlToText( retval.htmlText );
|
|
} else if ( typeof retval.toString != 'undefined' ) {
|
|
retval = retval.toString();
|
|
}
|
|
return retval;
|
|
},
|
|
/**
|
|
* Inserts text at the begining and end of a text selection, optionally inserting text at the caret when
|
|
* selection is empty.
|
|
* DO NOT CALL THIS DIRECTLY, use $.textSelection( 'functionname', options ) instead
|
|
*/
|
|
encapsulateSelection: function ( options ) {
|
|
var selText = $(this).textSelection( 'getSelection' );
|
|
var selTextArr;
|
|
var collapseToEnd = false;
|
|
var selectAfter = false;
|
|
var setSelectionTo = null;
|
|
var pre = options.pre, post = options.post;
|
|
if ( !selText ) {
|
|
selText = options.peri;
|
|
selectAfter = true;
|
|
} else if ( options.peri == selText.replace( /\s+$/, '' ) ) {
|
|
// Probably a successive button press
|
|
// strip any extra white space from selText
|
|
selText = selText.replace( /\s+$/, '' );
|
|
// set the collapseToEnd flag to ensure our selection is collapsed to the end before any insertion is done
|
|
collapseToEnd = true;
|
|
// set selectAfter to true since we know we'll be populating with our default text
|
|
selectAfter = true;
|
|
} else if ( options.replace ) {
|
|
selText = options.peri;
|
|
} else if ( selText.charAt( selText.length - 1 ) == ' ' ) {
|
|
// Exclude ending space char
|
|
// FIXME: Why?
|
|
selText = selText.substring( 0, selText.length - 1 );
|
|
post += ' ';
|
|
}
|
|
if ( options.splitlines ) {
|
|
selTextArr = selText.split( /\n/ );
|
|
}
|
|
|
|
if ( context.$iframe[0].contentWindow.getSelection ) {
|
|
// Firefox and Opera
|
|
var range = context.$iframe[0].contentWindow.getSelection().getRangeAt( 0 );
|
|
// if our test above indicated that this was a sucessive button press, we need to collapse the
|
|
// selection to the end to avoid replacing text
|
|
if ( collapseToEnd ) {
|
|
// Make sure we're not collapsing ourselves into a BR tag
|
|
if ( range.endContainer.nodeName == 'BR' ) {
|
|
range.setEndBefore( range.endContainer );
|
|
}
|
|
range.collapse( false );
|
|
}
|
|
if ( options.ownline ) {
|
|
// We need to figure out if the cursor is at the start or end of a line
|
|
var atStart = false, atEnd = false;
|
|
var body = context.$content.get( 0 );
|
|
if ( range.startOffset == 0 ) {
|
|
// Start of a line
|
|
// FIXME: Not necessarily the case with syntax highlighting or
|
|
// template collapsing
|
|
atStart = true;
|
|
} else if ( range.startContainer == body ) {
|
|
// Look up the node just before the start of the selection
|
|
// If it's a <BR>, we're at the start of a line that starts with a
|
|
// block element; if not, we're at the end of a line
|
|
var n = body.firstChild;
|
|
for ( var i = 0; i < range.startOffset - 1 && n; i++ ) {
|
|
n = n.nextSibling;
|
|
}
|
|
if ( n && n.nodeName == 'BR' ) {
|
|
atStart = true;
|
|
} else {
|
|
atEnd = true;
|
|
}
|
|
}
|
|
if ( ( range.endOffset == 0 && range.endContainer.nodeValue == null ) ||
|
|
( range.endContainer.nodeName == '#text' &&
|
|
range.endOffset == range.endContainer.nodeValue.length ) ||
|
|
( range.endContainer.nodeName == 'P' && range.endContainer.nodeValue == null ) ) {
|
|
atEnd = true;
|
|
}
|
|
if ( !atStart ) {
|
|
pre = "\n" + options.pre;
|
|
}
|
|
if ( !atEnd ) {
|
|
post += "\n";
|
|
}
|
|
}
|
|
var insertText = "";
|
|
if ( options.splitlines ) {
|
|
for( var j = 0; j < selTextArr.length; j++ ) {
|
|
insertText = insertText + pre + selTextArr[j] + post;
|
|
if( j != selTextArr.length - 1 ) {
|
|
insertText += "\n";
|
|
}
|
|
}
|
|
} else {
|
|
insertText = pre + selText + post;
|
|
}
|
|
var insertLines = insertText.split( "\n" );
|
|
range.extractContents();
|
|
// Insert the contents one line at a time - insertNode() inserts at the beginning, so this has to happen
|
|
// in reverse order
|
|
// Track the first and last inserted node, and if we need to also track where the text we need to select
|
|
// afterwards starts and ends
|
|
var firstNode = null, lastNode = null;
|
|
var selSC = null, selEC = null, selSO = null, selEO = null, offset = 0;
|
|
for ( var i = insertLines.length - 1; i >= 0; i-- ) {
|
|
firstNode = context.$iframe[0].contentWindow.document.createTextNode( insertLines[i] );
|
|
range.insertNode( firstNode );
|
|
lastNode = lastNode || firstNode;
|
|
var newOffset = offset + insertLines[i].length;
|
|
if ( !selEC && post.length <= newOffset ) {
|
|
selEC = firstNode;
|
|
selEO = selEC.nodeValue.length - ( post.length - offset );
|
|
}
|
|
if ( selEC && !selSC && pre.length >= insertText.length - newOffset ) {
|
|
selSC = firstNode;
|
|
selSO = pre.length - ( insertText.length - newOffset );
|
|
}
|
|
offset = newOffset;
|
|
if ( i > 0 ) {
|
|
firstNode = context.$iframe[0].contentWindow.document.createElement( 'br' );
|
|
range.insertNode( firstNode );
|
|
newOffset = offset + 1;
|
|
if ( !selEC && post.length <= newOffset ) {
|
|
selEC = firstNode;
|
|
selEO = 1 - ( post.length - offset );
|
|
}
|
|
if ( selEC && !selSC && pre.length >= insertText.length - newOffset ) {
|
|
selSC = firstNode;
|
|
selSO = pre.length - ( insertText.length - newOffset );
|
|
}
|
|
offset = newOffset;
|
|
}
|
|
}
|
|
if ( firstNode ) {
|
|
context.fn.scrollToTop( $( firstNode.parentNode ) );
|
|
}
|
|
if ( selectAfter ) {
|
|
setSelectionTo = {
|
|
startContainer: selSC,
|
|
endContainer: selEC,
|
|
start: selSO,
|
|
end: selEO
|
|
};
|
|
} else if ( lastNode ) {
|
|
setSelectionTo = {
|
|
startContainer: lastNode,
|
|
endContainer: lastNode,
|
|
start: lastNode.nodeValue.length,
|
|
end: lastNode.nodeValue.length
|
|
};
|
|
}
|
|
} else if ( context.$iframe[0].contentWindow.document.selection ) {
|
|
// IE
|
|
context.$iframe[0].contentWindow.focus();
|
|
var range = context.$iframe[0].contentWindow.document.selection.createRange();
|
|
if ( options.ownline && range.moveStart ) {
|
|
// Check if we're at the start of a line
|
|
// If not, prepend a newline
|
|
var range2 = context.$iframe[0].contentWindow.document.selection.createRange();
|
|
range2.collapse();
|
|
range2.moveStart( 'character', -1 );
|
|
// FIXME: Which check is correct?
|
|
if ( range2.text != "\r" && range2.text != "\n" && range2.text != "" ) {
|
|
pre = "\n" + pre;
|
|
}
|
|
|
|
// Check if we're at the end of a line
|
|
// If not, append a newline
|
|
var range3 = context.$iframe[0].contentWindow.document.selection.createRange();
|
|
range3.collapse( false );
|
|
range3.moveEnd( 'character', 1 );
|
|
if ( range3.text != "\r" && range3.text != "\n" && range3.text != "" ) {
|
|
post += "\n";
|
|
}
|
|
}
|
|
// if our test above indicated that this was a sucessive button press, we need to collapse the
|
|
// selection to the end to avoid replacing text
|
|
if ( collapseToEnd ) {
|
|
range.collapse( false );
|
|
}
|
|
// TODO: Clean this up. Duplicate code due to the pre-existing browser specific structure of this
|
|
// function
|
|
var insertText = "";
|
|
if ( options.splitlines ) {
|
|
for( var j = 0; j < selTextArr.length; j++ ) {
|
|
insertText = insertText + pre + selTextArr[j] + post;
|
|
if( j != selTextArr.length - 1 ) {
|
|
insertText += "\n";
|
|
}
|
|
}
|
|
} else {
|
|
insertText = pre + selText + post;
|
|
}
|
|
// TODO: Maybe find a more elegant way of doing this like the Firefox code above?
|
|
range.pasteHTML( insertText
|
|
.replace( /\</g, '<' )
|
|
.replace( />/g, '>' )
|
|
.replace( /\r?\n/g, '<br />' )
|
|
);
|
|
if ( selectAfter ) {
|
|
range.moveStart( 'character', -post.length - selText.length );
|
|
range.moveEnd( 'character', -post.length );
|
|
range.select();
|
|
}
|
|
}
|
|
|
|
if ( setSelectionTo ) {
|
|
context.fn.setSelection( setSelectionTo );
|
|
}
|
|
// Trigger the encapsulateSelection event (this might need to get named something else/done differently)
|
|
$( context.$iframe[0].contentWindow.document ).trigger(
|
|
'encapsulateSelection', [ pre, options.peri, post, options.ownline, options.replace ]
|
|
);
|
|
return context.$textarea;
|
|
},
|
|
/**
|
|
* Gets the position (in resolution of bytes not nessecarily characters) in a textarea
|
|
* DO NOT CALL THIS DIRECTLY, use $.textSelection( 'functionname', options ) instead
|
|
*/
|
|
getCaretPosition: function ( options ) {
|
|
var startPos = null, endPos = null;
|
|
if ( context.$iframe[0].contentWindow.getSelection ) {
|
|
var selection = context.$iframe[0].contentWindow.getSelection();
|
|
if ( selection.rangeCount == 0 ) {
|
|
// We don't know where the cursor is
|
|
return [ 0, 0 ];
|
|
}
|
|
var sc = selection.getRangeAt( 0 ).startContainer, ec = selection.getRangeAt( 0 ).endContainer;
|
|
var so = selection.getRangeAt( 0 ).startOffset, eo = selection.getRangeAt( 0 ).endOffset;
|
|
if ( sc.nodeName == 'BODY' ) {
|
|
// Grab the node just before the start of the selection
|
|
var n = sc.firstChild;
|
|
for ( var i = 0; i < so - 1 && n; i++ ) {
|
|
n = n.nextSibling;
|
|
}
|
|
sc = n;
|
|
so = 0;
|
|
}
|
|
if ( ec.nodeName == 'BODY' ) {
|
|
var n = ec.firstChild;
|
|
for ( var i = 0; i < eo - 1 && n; i++ ) {
|
|
n = n.nextSibling;
|
|
}
|
|
ec = n;
|
|
eo = 0;
|
|
}
|
|
|
|
// Make sure sc and ec are leaf nodes
|
|
while ( sc.firstChild ) {
|
|
sc = sc.firstChild;
|
|
}
|
|
while ( ec.firstChild ) {
|
|
ec = ec.firstChild;
|
|
}
|
|
// Make sure the offsets are regenerated if necessary
|
|
context.fn.getOffset( 0 );
|
|
var o;
|
|
for ( o in context.offsets ) {
|
|
if ( startPos === null && context.offsets[o].node == sc ) {
|
|
// For some wicked reason o is a string, even though
|
|
// we put it in as an integer. Use ~~ to coerce it too an int
|
|
startPos = ~~o + so - context.offsets[o].offset;
|
|
}
|
|
if ( startPos !== null && context.offsets[o].node == ec ) {
|
|
endPos = ~~o + eo - context.offsets[o].offset;
|
|
break;
|
|
}
|
|
}
|
|
} else if ( context.$iframe[0].contentWindow.document.selection ) {
|
|
// IE
|
|
// FIXME: This is mostly copypasted from the textSelection plugin
|
|
var d = context.$iframe[0].contentWindow.document;
|
|
var postFinished = false;
|
|
var periFinished = false;
|
|
var postFinished = false;
|
|
var preText, rawPreText, periText;
|
|
var rawPeriText, postText, rawPostText;
|
|
// Depending on the document state, and if the cursor has ever been manually placed within the document
|
|
// the following call such as setEndPoint can result in nasty errors. These cases are always cases
|
|
// in which the start and end points can safely be assumed to be 0, so we will just try our best to do
|
|
// the full process but fall back to 0.
|
|
try {
|
|
// Create range containing text in the selection
|
|
var periRange = d.selection.createRange().duplicate();
|
|
// Create range containing text before the selection
|
|
var preRange = d.body.createTextRange();
|
|
// Move the end where we need it
|
|
preRange.setEndPoint( "EndToStart", periRange );
|
|
// Create range containing text after the selection
|
|
var postRange = d.body.createTextRange();
|
|
// Move the start where we need it
|
|
postRange.setEndPoint( "StartToEnd", periRange );
|
|
// Load the text values we need to compare
|
|
preText = rawPreText = preRange.text;
|
|
periText = rawPeriText = periRange.text;
|
|
postText = rawPostText = postRange.text;
|
|
/*
|
|
* Check each range for trimmed newlines by shrinking the range by 1
|
|
* character and seeing if the text property has changed. If it has
|
|
* not changed then we know that IE has trimmed a \r\n from the end.
|
|
*/
|
|
do {
|
|
if ( !postFinished ) {
|
|
if ( preRange.compareEndPoints( "StartToEnd", preRange ) == 0 ) {
|
|
postFinished = true;
|
|
} else {
|
|
preRange.moveEnd( "character", -1 );
|
|
if ( preRange.text == preText ) {
|
|
rawPreText += "\r\n";
|
|
} else {
|
|
postFinished = true;
|
|
}
|
|
}
|
|
}
|
|
if ( !periFinished ) {
|
|
if ( periRange.compareEndPoints( "StartToEnd", periRange ) == 0 ) {
|
|
periFinished = true;
|
|
} else {
|
|
periRange.moveEnd( "character", -1 );
|
|
if ( periRange.text == periText ) {
|
|
rawPeriText += "\r\n";
|
|
} else {
|
|
periFinished = true;
|
|
}
|
|
}
|
|
}
|
|
if ( !postFinished ) {
|
|
if ( postRange.compareEndPoints("StartToEnd", postRange) == 0 ) {
|
|
postFinished = true;
|
|
} else {
|
|
postRange.moveEnd( "character", -1 );
|
|
if ( postRange.text == postText ) {
|
|
rawPostText += "\r\n";
|
|
} else {
|
|
postFinished = true;
|
|
}
|
|
}
|
|
}
|
|
} while ( ( !postFinished || !periFinished || !postFinished ) );
|
|
startPos = rawPreText.replace( /\r\n/g, "\n" ).length;
|
|
endPos = startPos + rawPeriText.replace( /\r\n/g, "\n" ).length;
|
|
} catch( e ) {
|
|
startPos = endPos = 0;
|
|
}
|
|
}
|
|
return [ startPos, endPos ];
|
|
},
|
|
/**
|
|
* Sets the selection of the content
|
|
* DO NOT CALL THIS DIRECTLY, use $.textSelection( 'functionname', options ) instead
|
|
*
|
|
* @param start Character offset of selection start
|
|
* @param end Character offset of selection end
|
|
* @param startContainer Element in iframe to start selection in. If not set, start is a character offset
|
|
* @param endContainer Element in iframe to end selection in. If not set, end is a character offset
|
|
*/
|
|
setSelection: function ( options ) {
|
|
var sc = options.startContainer, ec = options.endContainer;
|
|
sc = sc && sc.jquery ? sc[0] : sc;
|
|
ec = ec && ec.jquery ? ec[0] : ec;
|
|
if ( context.$iframe[0].contentWindow.getSelection ) {
|
|
// Firefox and Opera
|
|
var start = options.start, end = options.end;
|
|
if ( !sc || !ec ) {
|
|
var s = context.fn.getOffset( start );
|
|
var e = context.fn.getOffset( end );
|
|
sc = s ? s.node : null;
|
|
ec = e ? e.node : null;
|
|
start = s ? s.offset : null;
|
|
end = e ? e.offset : null;
|
|
// Don't try to set the selection past the end of a node, causes errors
|
|
// Just put the selection at the end of the node in this case
|
|
if ( sc != null && sc.nodeName == '#text' && start > sc.nodeValue.length ) {
|
|
start = sc.nodeValue.length - 1;
|
|
}
|
|
if ( ec != null && ec.nodeName == '#text' && end > ec.nodeValue.length ) {
|
|
end = ec.nodeValue.length - 1;
|
|
}
|
|
}
|
|
if ( !sc || !ec ) {
|
|
// The requested offset isn't in the offsets array
|
|
// Give up
|
|
return context.$textarea;
|
|
}
|
|
|
|
var sel = context.$iframe[0].contentWindow.getSelection();
|
|
while ( sc.firstChild && sc.nodeName != '#text' ) {
|
|
sc = sc.firstChild;
|
|
}
|
|
while ( ec.firstChild && ec.nodeName != '#text' ) {
|
|
ec = ec.firstChild;
|
|
}
|
|
var range = context.$iframe[0].contentWindow.document.createRange();
|
|
range.setStart( sc, start );
|
|
range.setEnd( ec, end );
|
|
sel.removeAllRanges();
|
|
sel.addRange( range );
|
|
context.$iframe[0].contentWindow.focus();
|
|
} else if ( context.$iframe[0].contentWindow.document.body.createTextRange ) {
|
|
// IE
|
|
var range = context.$iframe[0].contentWindow.document.body.createTextRange();
|
|
if ( sc ) {
|
|
range.moveToElementText( sc );
|
|
}
|
|
range.collapse();
|
|
range.moveEnd( 'character', options.start );
|
|
|
|
var range2 = context.$iframe[0].contentWindow.document.body.createTextRange();
|
|
if ( ec ) {
|
|
range2.moveToElementText( ec );
|
|
}
|
|
range2.collapse();
|
|
range2.moveEnd( 'character', options.end );
|
|
|
|
// IE does newline emulation for <p>s: <p>foo</p><p>bar</p> becomes foo\nbar just fine
|
|
// but <p>foo</p><br><br><p>bar</p> becomes foo\n\n\n\nbar , one \n too many
|
|
// Correct for this
|
|
var matches, counted = 0;
|
|
// while ( matches = range.htmlText.match( regex ) && matches.length <= counted ) doesn't work
|
|
// because the assignment side effect hasn't happened yet when the second term is evaluated
|
|
while ( matches = range.htmlText.match( /\<\/p\>(\<br[^\>]*\>)+\<p\>/gi ) ) {
|
|
if ( matches.length <= counted )
|
|
break;
|
|
range.moveEnd( 'character', matches.length );
|
|
counted += matches.length;
|
|
}
|
|
range2.moveEnd( 'character', counted );
|
|
while ( matches = range2.htmlText.match( /\<\/p\>(\<br[^\>]*\>)+\<p\>/gi ) ) {
|
|
if ( matches.length <= counted )
|
|
break;
|
|
range2.moveEnd( 'character', matches.length );
|
|
counted += matches.length;
|
|
}
|
|
|
|
range2.setEndPoint( 'StartToEnd', range );
|
|
range2.select();
|
|
}
|
|
return context.$textarea;
|
|
},
|
|
/**
|
|
* Scroll a textarea to the current cursor position. You can set the cursor position with setSelection()
|
|
* DO NOT CALL THIS DIRECTLY, use $.textSelection( 'functionname', options ) instead
|
|
*/
|
|
scrollToCaretPosition: function ( options ) {
|
|
context.fn.scrollToTop( context.fn.getElementAtCursor(), true );
|
|
},
|
|
/**
|
|
* Scroll an element to the top of the iframe
|
|
* DO NOT CALL THIS DIRECTLY, use $.textSelection( 'functionname', options ) instead
|
|
*
|
|
* @param $element jQuery object containing an element in the iframe
|
|
* @param force If true, scroll the element even if it's already visible
|
|
*/
|
|
scrollToTop: function ( $element, force ) {
|
|
var html = context.$content.closest( 'html' ),
|
|
body = context.$content.closest( 'body' ),
|
|
parentHtml = $( 'html' ),
|
|
parentBody = $( 'body' );
|
|
var y = $element.offset().top;
|
|
if ( !$.browser.msie && ! $element.is( 'body' ) ) {
|
|
y = parentHtml.scrollTop() > 0 ? y + html.scrollTop() - parentHtml.scrollTop() : y;
|
|
y = parentBody.scrollTop() > 0 ? y + body.scrollTop() - parentBody.scrollTop() : y;
|
|
}
|
|
var topBound = html.scrollTop() > body.scrollTop() ? html.scrollTop() : body.scrollTop(),
|
|
bottomBound = topBound + context.$iframe.height();
|
|
if ( force || y < topBound || y > bottomBound ) {
|
|
html.scrollTop( y );
|
|
body.scrollTop( y );
|
|
}
|
|
$element.trigger( 'scrollToTop' );
|
|
}
|
|
} );
|
|
|
|
/* Setup the IFrame */
|
|
context.fn.setupIframe();
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} } )( jQuery );
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