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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
/**
* @fileoverview This implements a splitter element which can be used to resize
* table columns.
*
* Each splitter is associated with certain column and resizes it when dragged.
* It is column model responsibility to resize other columns accordingly.
*/
cr.define('cr.ui', function() {
/** @const */ var Splitter = cr.ui.Splitter;
/**
* Creates a new table splitter element.
* @param {Object=} opt_propertyBag Optional properties.
* @constructor
* @extends {cr.ui.Splitter}
*/
var TableSplitter = cr.ui.define('div');
TableSplitter.prototype = {
__proto__: Splitter.prototype,
table_: null,
columnIndex_: null,
/**
* Initializes the element.
*/
decorate: function() {
Splitter.prototype.decorate.call(this);
this.classList.add('table-header-splitter');
},
/**
* Handles start of the splitter dragging.
* Saves starting width of the column and changes the cursor.
* @override
*/
handleSplitterDragStart: function() {
var cm = this.table_.columnModel;
this.ownerDocument.documentElement.classList.add('col-resize');
this.columnWidth_ = cm.getWidth(this.columnIndex);
this.nextColumnWidth_ = cm.getWidth(this.columnIndex + 1);
},
/**
* Handles spliter moves. Sets new width of the column.
* @override
*/
handleSplitterDragMove: function(deltaX) {
this.table_.columnModel.setWidth(
this.columnIndex, this.columnWidth_ + deltaX);
},
/**
* Handles end of the splitter dragging. Restores cursor.
* @override
*/
handleSplitterDragEnd: function() {
this.ownerDocument.documentElement.classList.remove('col-resize');
cr.dispatchSimpleEvent(this, 'column-resize-end', true);
},
};
/**
* The column index.
* @type {number}
*/
cr.defineProperty(TableSplitter, 'columnIndex');
/**
* The table associated with the splitter.
* @type {Element}
*/
cr.defineProperty(TableSplitter, 'table');
return {TableSplitter: TableSplitter};
});
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