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