Andrew Zambazos
138 lines
3.8 KiB
JavaScript
138 lines
3.8 KiB
JavaScript
/*
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* Copyright (C) 2013, 2015 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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WI.NavigationItem = class NavigationItem extends WI.Object
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{
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constructor(identifier, role, label)
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{
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super();
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this._identifier = identifier || null;
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this._element = document.createElement("div");
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this._hidden = false;
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this._parentNavigationBar = null;
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this._visibilityPriority = WI.NavigationItem.VisibilityPriority.Normal;
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this._cachedWidth = NaN;
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if (label)
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this._element.setAttribute("aria-label", label);
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this._element.classList.add(...this._classNames);
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this._element.role = role;
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this._element.navigationItem = this;
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}
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// Public
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get identifier() { return this._identifier; }
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get element() { return this._element; }
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get minimumWidth() { return this.width; }
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get parentNavigationBar() { return this._parentNavigationBar; }
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get width()
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{
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if (isNaN(this._cachedWidth))
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this._cachedWidth = this._element.realOffsetWidth + this.totalMargin;
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return this._cachedWidth;
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}
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get visibilityPriority() { return this._visibilityPriority; }
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set visibilityPriority(priority) { this._visibilityPriority = priority; }
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update(options = {})
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{
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// Implemented by subclasses.
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this._cachedWidth = NaN;
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}
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get hidden()
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{
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return this._hidden;
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}
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set hidden(flag)
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{
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if (this._hidden === flag)
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return;
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this._hidden = flag;
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this._element.classList.toggle("hidden", flag);
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if (this._parentNavigationBar)
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this._parentNavigationBar.needsLayout();
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}
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get tooltip()
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{
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return this.element.title;
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}
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set tooltip(x)
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{
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this.element.title = x;
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}
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// Protected
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get totalMargin()
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{
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// Implemented by subclasses if needed.
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return 0;
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}
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didAttach(navigationBar)
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{
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console.assert(navigationBar instanceof WI.NavigationBar);
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this._parentNavigationBar = navigationBar;
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}
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didDetach()
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{
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this._cachedWidth = NaN;
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this._parentNavigationBar = null;
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}
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// Private
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get _classNames()
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{
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var classNames = ["item"];
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if (this._identifier)
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classNames.push(this._identifier);
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if (Array.isArray(this.additionalClassNames))
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classNames.pushAll(this.additionalClassNames);
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return classNames;
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}
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};
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WI.NavigationItem.VisibilityPriority = {
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Low: -100,
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Normal: 0,
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High: 100,
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};
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