blob: 7d0b7ea6d657706ef8cca710f7f13cae010c837a [file] [log] [blame]
// Copyright (C) 2016 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
(function() {
'use strict';
Polymer({
is: 'gr-diff-selection',
properties: {
_cachedDiffBuilder: Object,
},
listeners: {
'copy': '_handleCopy',
'down': '_handleDown',
},
attached: function() {
this.classList.add('selected-right');
},
get diffBuilder() {
if (!this._cachedDiffBuilder) {
this._cachedDiffBuilder =
Polymer.dom(this).querySelector('gr-diff-builder');
}
return this._cachedDiffBuilder;
},
_handleDown: function(e) {
var lineEl = this.diffBuilder.getLineElByChild(e.target);
if (!lineEl) {
return;
}
var side = this.diffBuilder.getSideByLineEl(lineEl);
var targetClass = 'selected-' + side;
var alternateClass = 'selected-' + (side === 'left' ? 'right' : 'left');
if (this.classList.contains(alternateClass)) {
this.classList.remove(alternateClass);
}
if (!this.classList.contains(targetClass)) {
this.classList.add(targetClass);
}
},
_handleCopy: function(e) {
if (!e.target.classList.contains('content')) {
return;
}
var lineEl = this.diffBuilder.getLineElByChild(e.target);
if (!lineEl) {
return;
}
var side = this.diffBuilder.getSideByLineEl(lineEl);
var text = this._getSelectedText(side);
e.clipboardData.setData('Text', text);
e.preventDefault();
},
_getSelectedText: function(opt_side) {
var sel = window.getSelection();
if (sel.rangeCount != 1) {
return; // No multi-select support yet.
}
var range = sel.getRangeAt(0);
var fragment = range.cloneContents();
var selector = '.content,td.content:nth-of-type(1)';
if (opt_side) {
selector = '.' + opt_side + ' + ' + selector;
}
var contentEls = Polymer.dom(fragment).querySelectorAll(selector);
if (contentEls.length === 0) {
return fragment.textContent;
}
var text = '';
for (var i = 0; i < contentEls.length; i++) {
text += contentEls[i].textContent + '\n';
}
return text;
},
});
})();