81 lines
2.9 KiB
JavaScript
81 lines
2.9 KiB
JavaScript
// Copyright 2007 The Closure Library Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS-IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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/**
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* @fileoverview A class for representing a separator, with renderers for both
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* horizontal (menu) and vertical (toolbar) separators.
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*
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* @author attila@google.com (Attila Bodis)
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*/
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goog.provide('goog.ui.Separator');
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goog.require('goog.a11y.aria');
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goog.require('goog.asserts');
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goog.require('goog.ui.Component');
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goog.require('goog.ui.Control');
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goog.require('goog.ui.MenuSeparatorRenderer');
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goog.require('goog.ui.registry');
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/**
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* Class representing a separator. Although it extends {@link goog.ui.Control},
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* the Separator class doesn't allocate any event handlers, nor does it change
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* its appearance on mouseover, etc.
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* @param {goog.ui.MenuSeparatorRenderer=} opt_renderer Renderer to render or
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* decorate the separator; defaults to {@link goog.ui.MenuSeparatorRenderer}.
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* @param {goog.dom.DomHelper=} opt_domHelper Optional DOM helper, used for
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* document interaction.
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* @constructor
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* @extends {goog.ui.Control}
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*/
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goog.ui.Separator = function(opt_renderer, opt_domHelper) {
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goog.ui.Control.call(this, null, opt_renderer ||
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goog.ui.MenuSeparatorRenderer.getInstance(), opt_domHelper);
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this.setSupportedState(goog.ui.Component.State.DISABLED, false);
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this.setSupportedState(goog.ui.Component.State.HOVER, false);
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this.setSupportedState(goog.ui.Component.State.ACTIVE, false);
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this.setSupportedState(goog.ui.Component.State.FOCUSED, false);
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// Separators are always considered disabled.
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this.setStateInternal(goog.ui.Component.State.DISABLED);
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};
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goog.inherits(goog.ui.Separator, goog.ui.Control);
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/**
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* Configures the component after its DOM has been rendered. Overrides
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* {@link goog.ui.Control#enterDocument} by making sure no event handler
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* is allocated.
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* @override
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*/
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goog.ui.Separator.prototype.enterDocument = function() {
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goog.ui.Separator.superClass_.enterDocument.call(this);
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var element = this.getElement();
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goog.asserts.assert(element,
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'The DOM element for the separator cannot be null.');
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goog.a11y.aria.setRole(element, 'separator');
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};
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// Register a decorator factory function for goog.ui.MenuSeparators.
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goog.ui.registry.setDecoratorByClassName(
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goog.ui.MenuSeparatorRenderer.CSS_CLASS,
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function() {
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// Separator defaults to using MenuSeparatorRenderer.
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return new goog.ui.Separator();
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});
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