wikimedia/mediawiki-extensions-VisualEditor
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Programmatic handling for selection (arrow left and arrow right only).

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Change-Id: I6ccbecdeafbe189dbe052e4e9ce8f926dad14aea
This commit is contained in:
Inez Korczyński 2013-03-22 11:44:32 -07:00
parent 5b9964878d
commit 8b2d3caebb
1 changed files with 34 additions and 16 deletions
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50
modules/ve/ce/ve.ce.Surface.js
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@ -258,33 +258,47 @@ ve.ce.Surface.prototype.onDocumentDragoverDrop = function () {
* @emits selectionStart
*/
ve.ce.Surface.prototype.onDocumentKeyDown = function ( e ) {
var selection, offset, range;
// Ignore keydowns while in IME mode but do not preventDefault them.
if ( this.inIme === true ) {
return;
}
if ( e.which === 229 && $.browser.msie === true ) {
if ( $.browser.msie === true && e.which === 229 ) {
this.inIme = true;
this.handleInsertion();
return;
}
// Detect start of selecting using shift+arrow keys
if ( !this.dragging && !this.selecting && e.shiftKey && e.keyCode >= 37 && e.keyCode <= 40 ) {
// Detect start of selecting using shift+arrow keys.
if ( !this.dragging && !this.selecting && e.shiftKey && ve.ce.isArrowKey( e.keyCode ) ) {
this.selecting = true;
this.emit( 'selectionStart' );
}
if ( ve.ce.isLeftOrRightArrowKey( e.keyCode ) ) {
// On Mac OS pressing Command (metaKey) + Left/Right is same as pressing Home/End.
// As we are not able to handle it programmatically (because we don't know at which
// offsets lines starts and ends) let it happen natively.
if ( e.metaKey ) {
return;
}
// Selection is going to be displayed programmatically so prevent default browser behaviour
e.preventDefault();
// Stop with final poll cycle so we have correct information in model
this.surfaceObserver.stop( true );
selection = this.model.getSelection();
offset = this.getDocument().getRelativeOffset(
selection.to,
e.keyCode === ve.Keys.DOM_VK_LEFT ? -1 : 1, // direction (left or right)
e.altKey === true || e.ctrlKey === true ? 'word' : 'character' // unit
);
if ( e.shiftKey === true ) { // expanded range
range = new ve.Range( selection.from, offset );
} else { // collapsed range (just a cursor)
range = new ve.Range( offset );
}
this.model.change( null, range );
return;
}
switch ( e.keyCode ) {
case ve.Keys.DOM_VK_LEFT:
if ( this.adjustCursor( -1 ) ) {
e.preventDefault();
}
break;
case ve.Keys.DOM_VK_RIGHT:
if ( this.adjustCursor( 1 ) ) {
e.preventDefault();
}
break;
case ve.Keys.DOM_VK_RETURN:
e.preventDefault();
this.handleEnter( e );
@ -513,6 +527,10 @@ ve.ce.Surface.prototype.onChange = function ( transaction, selection ) {
* @param {ve.Range} newRange
*/
ve.ce.Surface.prototype.onSelectionChange = function ( oldRange, newRange ) {
if ( oldRange && newRange.flip().equals( oldRange ) ) {
// Ignore when the newRange is just a flipped oldRange
return;
}
this.disableRendering();
this.model.change( null, newRange );
this.enableRendering();