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// Copyright 2008 The Closure Library Authors. All Rights Reserved.
//
// 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.
/**
* @fileoverview A tab control, designed to be used in {@link goog.ui.TabBar}s.
*
* @author attila@google.com (Attila Bodis)
* @see ../demos/tabbar.html
*/
goog.provide('goog.ui.Tab');
goog.require('goog.ui.Component.State');
goog.require('goog.ui.Control');
goog.require('goog.ui.ControlContent');
goog.require('goog.ui.TabRenderer');
goog.require('goog.ui.registry');
/**
* Tab control, designed to be hosted in a {@link goog.ui.TabBar}. The tab's
* DOM may be different based on the configuration of the containing tab bar,
* so tabs should only be rendered or decorated as children of a tab bar.
* @param {goog.ui.ControlContent} content Text caption or DOM structure to
* display as the tab's caption (if any).
* @param {goog.ui.TabRenderer=} opt_renderer Optional renderer used to render
* or decorate the tab.
* @param {goog.dom.DomHelper=} opt_domHelper Optional DOM hepler, used for
* document interaction.
* @constructor
* @extends {goog.ui.Control}
*/
goog.ui.Tab = function(content, opt_renderer, opt_domHelper) {
goog.ui.Control.call(this, content,
opt_renderer || goog.ui.TabRenderer.getInstance(), opt_domHelper);
// Tabs support the SELECTED state.
this.setSupportedState(goog.ui.Component.State.SELECTED, true);
// Tabs must dispatch state transition events for the DISABLED and SELECTED
// states in order for the tab bar to function properly.
this.setDispatchTransitionEvents(
goog.ui.Component.State.DISABLED | goog.ui.Component.State.SELECTED,
true);
};
goog.inherits(goog.ui.Tab, goog.ui.Control);
/**
* Tooltip text for the tab, displayed on hover (if any).
* @type {string|undefined}
* @private
*/
goog.ui.Tab.prototype.tooltip_;
/**
* @return {string|undefined} Tab tooltip text (if any).
*/
goog.ui.Tab.prototype.getTooltip = function() {
return this.tooltip_;
};
/**
* Sets the tab tooltip text. If the tab has already been rendered, updates
* its tooltip.
* @param {string} tooltip New tooltip text.
*/
goog.ui.Tab.prototype.setTooltip = function(tooltip) {
this.getRenderer().setTooltip(this.getElement(), tooltip);
this.setTooltipInternal(tooltip);
};
/**
* Sets the tab tooltip text. Considered protected; to be called only by the
* renderer during element decoration.
* @param {string} tooltip New tooltip text.
* @protected
*/
goog.ui.Tab.prototype.setTooltipInternal = function(tooltip) {
this.tooltip_ = tooltip;
};
// Register a decorator factory function for goog.ui.Tabs.
goog.ui.registry.setDecoratorByClassName(goog.ui.TabRenderer.CSS_CLASS,
function() {
return new goog.ui.Tab(null);
});
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