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* VisualEditor ContentEditable table arrow key down handler
*
* @copyright See AUTHORS.txt
*/
/* istanbul ignore next */
/**
* Arrow key down handler for table selections.
*
* @class
* @extends ve.ce.KeyDownHandler
*
* @constructor
*/
ve.ce.TableArrowKeyDownHandler = function VeCeTableArrowKeyDownHandler() {
// Parent constructor - never called because class is fully static
// ve.ui.TableArrowKeyDownHandler.super.apply( this, arguments );
};
/* Inheritance */
OO.inheritClass( ve.ce.TableArrowKeyDownHandler, ve.ce.KeyDownHandler );
/* Static properties */
ve.ce.TableArrowKeyDownHandler.static.name = 'tableArrow';
ve.ce.TableArrowKeyDownHandler.static.keys = [
OO.ui.Keys.UP, OO.ui.Keys.DOWN, OO.ui.Keys.LEFT, OO.ui.Keys.RIGHT,
OO.ui.Keys.HOME, OO.ui.Keys.END, OO.ui.Keys.PAGEUP, OO.ui.Keys.PAGEDOWN,
OO.ui.Keys.TAB
];
ve.ce.TableArrowKeyDownHandler.static.supportedSelections = [ 'table' ];
/* Static methods */
/**
* @inheritdoc
*/
ve.ce.TableArrowKeyDownHandler.static.execute = function ( surface, e ) {
var wrap = false,
checkDir = false,
colOffset = 0,
rowOffset = 0,
expand = e.shiftKey;
if ( e.ctrlKey || e.altKey || e.metaKey ) {
// Support: Firefox
// In Firefox, ctrl-tab to switch browser-tabs still triggers the
// keydown event.
return;
}
switch ( e.keyCode ) {
case OO.ui.Keys.LEFT:
colOffset = -1;
checkDir = true;
break;
case OO.ui.Keys.RIGHT:
colOffset = 1;
checkDir = true;
break;
case OO.ui.Keys.UP:
rowOffset = -1;
break;
case OO.ui.Keys.DOWN:
rowOffset = 1;
break;
case OO.ui.Keys.HOME:
colOffset = -Infinity;
break;
case OO.ui.Keys.END:
colOffset = Infinity;
break;
case OO.ui.Keys.PAGEUP:
rowOffset = -Infinity;
break;
case OO.ui.Keys.PAGEDOWN:
rowOffset = Infinity;
break;
case OO.ui.Keys.TAB:
colOffset = e.shiftKey ? -1 : 1;
expand = false; // Shift-tab is a movement, not an expansion
wrap = true;
break;
}
e.preventDefault();
this.moveTableSelection( surface, rowOffset, colOffset, checkDir, expand, wrap );
return true;
};
/**
* @param {ve.ce.Surface} surface
* @param {number} rowOffset how many rows to move
* @param {number} colOffset how many columns to move
* @param {boolean} checkDir whether to translate offsets according to ltr settings
* @param {boolean} expand whether to expand the selection or replace it
* @param {boolean} wrap Wrap to the next/previous row at edges, insert new row at end
*/
ve.ce.TableArrowKeyDownHandler.static.moveTableSelection = function ( surface, rowOffset, colOffset, checkDir, expand, wrap ) {
var selection = surface.getModel().getSelection();
if ( colOffset && checkDir ) {
var tableNode = surface.documentView.getBranchNodeFromOffset( selection.tableRange.start + 1 );
if ( tableNode.$element.css( 'direction' ) !== 'ltr' ) {
colOffset *= -1;
}
}
if ( !expand ) {
selection = selection.collapseToFrom();
}
var newSelection;
function adjust() {
newSelection = selection.newFromAdjustment(
surface.getModel().getDocument(),
expand ? 0 : colOffset,
expand ? 0 : rowOffset,
colOffset,
rowOffset,
wrap
);
}
adjust();
// If wrapping forwards didn't move, we must be at the end of the table,
// so insert a new row and try again
if ( wrap && colOffset > 0 && selection.equals( newSelection ) ) {
surface.getSurface().execute( 'table', 'insert', 'row', 'after' );
selection = surface.getModel().getSelection();
adjust();
}
// If moving up/down didn't move, we must be at the start/end of the table,
// so move outside
if ( ( rowOffset !== 0 || ( rowOffset === 0 && colOffset === -1 && wrap ) ) && selection.equals( newSelection ) ) {
var documentModel = surface.getModel().getDocument();
var captionNode;
if ( ( rowOffset === -1 || ( colOffset === -1 && wrap ) ) && ( captionNode = selection.getTableNode( documentModel ).getCaptionNode() ) ) {
// If we're moving up/backwards, and there's a caption node, put the selection in it
newSelection = new ve.dm.LinearSelection( documentModel.getRelativeRange( new ve.Range( captionNode.getRange().start ), 1 ) );
} else {
// Otherwise, go outside the table
newSelection = new ve.dm.LinearSelection( documentModel.getRelativeRange( selection.tableRange, rowOffset || colOffset ) );
}
}
surface.getModel().setSelection( newSelection );
};
/* Registration */
ve.ce.keyDownHandlerFactory.register( ve.ce.TableArrowKeyDownHandler );
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