wide/static/js/tabs.js

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/*
* Copyright (c) 2015, B3log
*
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* 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
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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
* 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.
*/
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var Tabs = function (obj) {
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obj._$tabsPanel = $(obj.id + " > .tabs-panel");
obj._$tabs = $(obj.id + " > .tabs");
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obj._stack = [];
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this.obj = obj;
this.obj.STACKSIZE = 64;
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this._init(obj);
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// DOM 元素存在时,应顺序入栈
var _it = this;
$(obj.id + " > .tabs > div").each(function () {
var id = $(this).data("index");
if (obj._stack.length === _it.obj.STACKSIZE) {
obj._stack.splice(0, 1);
}
if (obj._stack[obj._stack.length - 1] !== id) {
_it.obj._stack.push(id);
}
});
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};
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$.extend(Tabs.prototype, {
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_init: function (obj) {
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var _that = this;
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obj._$tabs.on("click", "div", function (event) {
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if ($(this).hasClass('current')) {
return false;
}
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var id = $(this).data("index");
_that.setCurrent(id);
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if (typeof (obj.clickAfter) === "function") {
obj.clickAfter(id);
}
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});
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obj._$tabs.on("click", ".ico-close", function (event) {
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var id = $(this).parent().data("index"),
isRemove = true;
if (typeof obj.removeBefore === 'function') {
isRemove = obj.removeBefore(id);
}
if (isRemove) {
_that.del(id);
}
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event.stopPropagation();
});
},
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_hasId: function (id) {
var $tabs = this.obj._$tabs;
if ($tabs.find("div[data-index=" + id + "]").length === 0) {
return false;
}
return true;
},
add: function (data) {
// 添加当前 tab
if (this.getCurrentId() === data.id) {
return false;
}
// 当前 tab 已经存在
if (this._hasId(data.id)) {
this.setCurrent(data.id);
return false;
}
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var $tabsPanel = this.obj._$tabsPanel,
$tabs = this.obj._$tabs;
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$tabs.append('<div data-index="' + data.id + '">'
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+ data.title + ' <span class="ico-close font-ico"></span></div>');
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$tabsPanel.append('<div data-index="' + data.id + '">' + data.content
+ '</div>');
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this.setCurrent(data.id);
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if (typeof data.after === 'function') {
data.after();
}
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},
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del: function (id) {
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var $tabsPanel = this.obj._$tabsPanel,
$tabs = this.obj._$tabs,
stack = this.obj._stack,
prevId = null;
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$tabs.children("div[data-index='" + id + "']").remove();
$tabsPanel.children("div[data-index='" + id + "']").remove();
// 移除堆栈中该 id
for (var i = 0; i < stack.length; i++) {
if (id === stack[i]) {
stack.splice(i, 1);
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i--;
}
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}
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prevId = stack[stack.length - 1];
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if (typeof this.obj.removeAfter === 'function') {
this.obj.removeAfter(id, prevId);
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}
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this.setCurrent(prevId);
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},
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getCurrentId: function () {
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var $tabs = this.obj._$tabs;
return $tabs.children(".current").data("index");
},
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setCurrent: function (id) {
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if (!id) {
return false;
}
var $tabsPanel = this.obj._$tabsPanel,
$tabs = this.obj._$tabs;
var $currentTab = $tabs.children(".current");
if ($currentTab.data("index") === id) {
return false;
}
// tab 顺序入栈,如栈满则清除
var stack = this.obj._stack;
if (stack.length === this.obj.STACKSIZE) {
stack.splice(0, 1);
}
if (stack[stack.length - 1] !== id) {
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this.obj._stack.push(id);
}
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$tabs.children("div").removeClass("current");
$tabsPanel.children("div").hide();
$tabs.children("div[data-index='" + id + "']").addClass("current");
$tabsPanel.children("div[data-index='" + id + "']").show();
if (typeof this.obj.setAfter === 'function') {
this.obj.setAfter();
}
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}
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});