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103 lines
2.7 KiB
103 lines
2.7 KiB
/** |
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* Created by roy on 15/11/6. |
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*/ |
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BI.LazyLoader = BI.inherit(BI.Widget, { |
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_const: { |
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PAGE: 100 |
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}, |
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_defaultConfig: function () { |
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return BI.extend(BI.LazyLoader.superclass._defaultConfig.apply(this, arguments), { |
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baseCls: "bi-lazy-loader", |
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el: {}, |
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items: [] |
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}); |
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}, |
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_init: function () { |
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var self = this, o = this.options; |
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BI.LazyLoader.superclass._init.apply(this, arguments); |
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var all = o.items.length; |
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this.loader = BI.createWidget({ |
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type: "bi.loader", |
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element: this, |
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// 下面是button_group的属性 |
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el: o.el, |
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itemsCreator: function (options, populate) { |
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populate(self._getNextItems(options)); |
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}, |
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hasNext: function (option) { |
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return option.count < all; |
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} |
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}); |
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this.loader.on(BI.Loader.EVENT_CHANGE, function (obj) { |
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self.fireEvent(BI.LazyLoader.EVENT_CHANGE, obj); |
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}); |
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}, |
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_getNextItems: function (options) { |
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var self = this, o = this.options; |
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var lastNum = o.items.length - this._const.PAGE * (options.times - 1); |
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var lastItems = BI.takeRight(o.items, lastNum); |
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var nextItems = BI.take(lastItems, this._const.PAGE); |
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return nextItems; |
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}, |
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populate: function (items) { |
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this.loader.populate(items); |
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}, |
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addItems: function (items) { |
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this.loader.addItems(items); |
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}, |
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empty: function () { |
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this.loader.empty(); |
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}, |
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setNotSelectedValue: function () { |
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this.loader.setNotSelectedValue.apply(this.loader, arguments); |
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}, |
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getNotSelectedValue: function () { |
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return this.loader.getNotSelectedValue(); |
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}, |
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setValue: function () { |
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this.loader.setValue.apply(this.loader, arguments); |
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}, |
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getValue: function () { |
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return this.loader.getValue.apply(this.loader, arguments); |
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}, |
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getAllButtons: function () { |
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return this.loader.getAllButtons(); |
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}, |
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getAllLeaves: function () { |
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return this.loader.getAllLeaves(); |
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}, |
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getSelectedButtons: function () { |
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return this.loader.getSelectedButtons(); |
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}, |
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getNotSelectedButtons: function () { |
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return this.loader.getNotSelectedButtons(); |
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}, |
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getIndexByValue: function (value) { |
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return this.loader.getIndexByValue(value); |
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}, |
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getNodeById: function (id) { |
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return this.loader.getNodeById(id); |
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}, |
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getNodeByValue: function (value) { |
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return this.loader.getNodeByValue(value); |
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} |
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}); |
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BI.LazyLoader.EVENT_CHANGE = "EVENT_CHANGE"; |
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BI.shortcut("bi.lazy_loader", BI.LazyLoader); |