Added SDK
This commit is contained in:
Andrew Zambazos
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/*
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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.ScopeBar = class ScopeBar extends WI.NavigationItem
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{
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constructor(identifier, items, defaultItem, shouldGroupNonExclusiveItems)
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{
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super(identifier);
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this._element.classList.add("scope-bar");
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this._items = items;
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this._defaultItem = defaultItem;
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this._shouldGroupNonExclusiveItems = shouldGroupNonExclusiveItems || false;
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for (let item of this._items)
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item.scopeBar = this;
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this._minimumWidth = 0;
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this._populate();
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this._element.addEventListener("keydown", this._handleKeyDown.bind(this));
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}
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// Public
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get minimumWidth()
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{
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if (!this._minimumWidth) {
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// If a "display: flex;" element is too small for its contents and
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// has "flex-wrap: wrap;" set as well, this will cause the contents
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// to wrap (potentially overflowing), thus preventing a proper
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// measurement of the width of the element. Removing the "flex-wrap"
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// property will ensure that the contents are rendered on one line.
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this.element.style.flexWrap = "initial !important";
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if (this._multipleItem)
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this._multipleItem.displayWidestItem();
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this._minimumWidth = this.element.realOffsetWidth;
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this.element.style.flexWrap = null;
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if (this._multipleItem)
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this._multipleItem.displaySelectedItem();
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}
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return this._minimumWidth;
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}
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get defaultItem()
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{
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return this._defaultItem;
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}
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get items()
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{
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return this._items;
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}
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item(id)
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{
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return this._itemsById.get(id);
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}
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get selectedItems()
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{
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return this._items.filter((item) => item.selected);
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}
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hasNonDefaultItemSelected()
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{
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return this._items.some((item) => item.selected && item !== this._defaultItem);
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}
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resetToDefault()
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{
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let selectedItems = this.selectedItems;
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if (selectedItems.length === 1 && selectedItems[0] === this._defaultItem)
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return;
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for (let item of this._items)
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item.selected = false;
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this._defaultItem.selected = true;
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this.dispatchEventToListeners(WI.ScopeBar.Event.SelectionChanged);
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}
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// Private
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_populate()
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{
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this._itemsById = new Map;
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if (this._shouldGroupNonExclusiveItems) {
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var nonExclusiveItems = [];
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for (var item of this._items) {
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this._itemsById.set(item.id, item);
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if (item.exclusive)
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this._element.appendChild(item.element);
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else
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nonExclusiveItems.push(item);
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item.addEventListener(WI.ScopeBarItem.Event.SelectionChanged, this._itemSelectionDidChange, this);
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}
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this._multipleItem = new WI.MultipleScopeBarItem(nonExclusiveItems);
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this._element.appendChild(this._multipleItem.element);
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} else {
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for (var item of this._items) {
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this._itemsById.set(item.id, item);
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this._element.appendChild(item.element);
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item.addEventListener(WI.ScopeBarItem.Event.SelectionChanged, this._itemSelectionDidChange, this);
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}
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}
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if (this._defaultItem) {
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if (!this.selectedItems.length)
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this._defaultItem.selected = true;
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this._element.classList.toggle("default-item-selected", this._defaultItem.selected);
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}
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}
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_itemSelectionDidChange(event)
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{
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var sender = event.target;
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var item;
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// An exclusive item was selected, unselect everything else.
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if (sender.exclusive && sender.selected) {
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for (var i = 0; i < this._items.length; ++i) {
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item = this._items[i];
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if (item !== sender)
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item.selected = false;
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}
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} else {
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let replacesCurrentSelection = this._shouldGroupNonExclusiveItems || !event.data.extendSelection;
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for (var i = 0; i < this._items.length; ++i) {
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item = this._items[i];
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if (item.exclusive && item !== sender && sender.selected)
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item.selected = false;
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else if (sender.selected && replacesCurrentSelection && sender !== item)
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item.selected = false;
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}
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}
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if (this._defaultItem) {
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if (!this.selectedItems.length)
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this._defaultItem.selected = true;
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this._element.classList.toggle("default-item-selected", this._defaultItem.selected);
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}
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this.dispatchEventToListeners(WI.ScopeBar.Event.SelectionChanged);
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}
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_handleKeyDown(event)
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{
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if (event.code === "ArrowLeft" || event.code === "ArrowRight") {
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event.stop();
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let focusedIndex = -1;
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for (let i = 0; i < this._items.length; ++i) {
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let element = this._items[i].element;
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if (element === document.activeElement) {
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focusedIndex = i;
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break;
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}
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}
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if (focusedIndex === -1)
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return;
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let delta = (event.code === "ArrowLeft") ? -1 : 1;
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if (WI.resolveLayoutDirectionForElement(this._element) === WI.LayoutDirection.RTL)
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delta *= -1;
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focusedIndex += delta;
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focusedIndex = (focusedIndex + this._items.length) % this._items.length;
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this._items[focusedIndex].element.focus();
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}
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}
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};
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WI.ScopeBar.Event = {
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SelectionChanged: "scopebar-selection-did-change"
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};
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