mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/VisualEditor
synced 2024-09-27 20:26:46 +00:00
255 lines
6.8 KiB
JavaScript
255 lines
6.8 KiB
JavaScript
ve.ce.Content = function( model, $container, parent ) {
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// Inheritance
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ve.EventEmitter.call( this );
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// Properties
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this.$ = $container;
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this.model = model;
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this.parent = parent;
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if ( model ) {
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// Events
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var _this = this;
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this.model.on( 'update', function( offset ) {
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var surfaceView = _this.getSurfaceView();
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if (surfaceView.autoRender) {
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_this.render( offset || 0 );
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}
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} );
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}
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};
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/* Static Members */
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/**
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* List of annotation rendering implementations.
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*
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* Each supported annotation renderer must have an open and close property, each either a string or
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* a function which accepts a data argument.
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*
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* @static
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* @member
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*/
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ve.ce.Content.annotationRenderers = {
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'object/template': {
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'open': function( data ) {
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return '<span class="es-contentView-format-object">' + data.html;
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},
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'close': '</span>'
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},
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'object/hook': {
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'open': function( data ) {
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return '<span class="es-contentView-format-object">' + data.html;
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},
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'close': '</span>'
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},
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'textStyle/bold': {
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'open': '<b>',
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'close': '</b>'
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},
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'textStyle/italic': {
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'open': '<i>',
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'close': '</i>'
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},
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'textStyle/strong': {
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'open': '<span class="es-contentView-format-textStyle-strong">',
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'close': '</span>'
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},
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'textStyle/emphasize': {
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'open': '<span class="es-contentView-format-textStyle-emphasize">',
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'close': '</span>'
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},
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'textStyle/big': {
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'open': '<span class="es-contentView-format-textStyle-big">',
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'close': '</span>'
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},
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'textStyle/small': {
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'open': '<span class="es-contentView-format-textStyle-small">',
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'close': '</span>'
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},
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'textStyle/superScript': {
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'open': '<span class="es-contentView-format-textStyle-superScript">',
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'close': '</span>'
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},
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'textStyle/subScript': {
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'open': '<span class="es-contentView-format-textStyle-subScript">',
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'close': '</span>'
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},
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'link/external': {
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'open': function( data ) {
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return '<span class="es-contentView-format-link" data-href="' + data.href + '">';
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},
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'close': '</span>'
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},
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'link/internal': {
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'open': function( data ) {
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return '<span class="es-contentView-format-link" data-title="wiki/' + data.title + '">';
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},
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'close': '</span>'
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}
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};
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/**
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* Mapping of character and HTML entities or renderings.
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*
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* @static
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* @member
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*/
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ve.ce.Content.htmlCharacters = {
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'&': '&',
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'<': '<',
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'>': '>',
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'\'': ''',
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'"': '"',
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'\n': '<span class="es-contentView-whitespace">¶</span>',
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'\t': '<span class="es-contentView-whitespace">⇾</span>'
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};
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/* Static Methods */
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/**
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* Gets a rendered opening or closing of an annotation.
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*
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* Tag nesting is handled using a stack, which keeps track of what is currently open. A common stack
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* argument should be used while rendering content.
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*
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* @static
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* @method
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* @param {String} bias Which side of the annotation to render, either "open" or "close"
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* @param {Object} annotation Annotation to render
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* @param {Array} stack List of currently open annotations
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* @returns {String} Rendered annotation
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*/
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ve.ce.Content.renderAnnotation = function( bias, annotation, stack ) {
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var renderers = ve.ce.Content.annotationRenderers,
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type = annotation.type,
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out = '';
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if ( type in renderers ) {
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if ( bias === 'open' ) {
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// Add annotation to the top of the stack
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stack.push( annotation );
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// Open annotation
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out += typeof renderers[type].open === 'function' ?
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renderers[type].open( annotation.data ) : renderers[type].open;
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} else {
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if ( stack[stack.length - 1] === annotation ) {
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// Remove annotation from top of the stack
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stack.pop();
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// Close annotation
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out += typeof renderers[type].close === 'function' ?
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renderers[type].close( annotation.data ) : renderers[type].close;
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} else {
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// Find the annotation in the stack
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var depth = ve.inArray( annotation, stack ),
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i;
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if ( depth === -1 ) {
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throw 'Invalid stack error. An element is missing from the stack.';
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}
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// Close each already opened annotation
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for ( i = stack.length - 1; i >= depth + 1; i-- ) {
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out += typeof renderers[stack[i].type].close === 'function' ?
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renderers[stack[i].type].close( stack[i].data ) :
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renderers[stack[i].type].close;
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}
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// Close the buried annotation
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out += typeof renderers[type].close === 'function' ?
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renderers[type].close( annotation.data ) : renderers[type].close;
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// Re-open each previously opened annotation
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for ( i = depth + 1; i < stack.length; i++ ) {
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out += typeof renderers[stack[i].type].open === 'function' ?
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renderers[stack[i].type].open( stack[i].data ) :
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renderers[stack[i].type].open;
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}
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// Remove the annotation from the middle of the stack
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stack.splice( depth, 1 );
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}
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}
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}
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return out;
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};
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/* Methods */
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ve.ce.Content.prototype.render = function( offset ) {
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this.$.html( this.getHtml( 0, this.model.getContentLength() ) );
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};
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/**
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* Gets an HTML rendering of a range of data within content model.
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*
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* @method
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* @param {ve.Range} range Range of content to render
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* @param {String} Rendered HTML of data within content model
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*/
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ve.ce.Content.prototype.getHtml = function( range, options ) {
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if ( range ) {
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range.normalize();
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} else {
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range = { 'start': 0, 'end': undefined };
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}
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var data = this.model.getContentData(),
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render = ve.ce.Content.renderAnnotation,
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htmlChars = ve.ce.Content.htmlCharacters;
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var out = '',
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left = '',
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right,
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leftPlain,
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rightPlain,
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stack = [],
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chr,
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i,
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j;
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for ( i = 0; i < data.length; i++ ) {
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right = data[i];
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leftPlain = typeof left === 'string';
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rightPlain = typeof right === 'string';
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if ( !leftPlain && rightPlain ) {
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// [formatted][plain] pair, close any annotations for left
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for ( j = 1; j < left.length; j++ ) {
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out += render( 'close', left[j], stack );
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}
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} else if ( leftPlain && !rightPlain ) {
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// [plain][formatted] pair, open any annotations for right
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for ( j = 1; j < right.length; j++ ) {
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out += render( 'open', right[j], stack );
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}
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} else if ( !leftPlain && !rightPlain ) {
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// [formatted][formatted] pair, open/close any differences
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for ( j = 1; j < left.length; j++ ) {
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if ( ve.inArray( left[j], right ) === -1 ) {
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out += render( 'close', left[j], stack );
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}
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}
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for ( j = 1; j < right.length; j++ ) {
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if ( ve.inArray( right[j], left ) === -1 ) {
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out += render( 'open', right[j], stack );
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}
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}
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}
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chr = rightPlain ? right : right[0];
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out += chr in htmlChars ? htmlChars[chr] : chr;
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left = right;
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}
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// Close all remaining tags at the end of the content
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if ( !rightPlain && right ) {
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for ( j = 1; j < right.length; j++ ) {
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out += render( 'close', right[j], stack );
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}
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}
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return out;
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};
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ve.ce.Content.prototype.getSurfaceView = function() {
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var view = this;
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while(!view.surfaceView) {
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view = view.parent;
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}
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return view.surfaceView;
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};
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/* Inheritance */
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ve.extendClass( ve.ce.Content, ve.EventEmitter );
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