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125 lines
2.8 KiB
125 lines
2.8 KiB
/*global kampfer*/
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kampfer.require('Class');
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kampfer.require('store');
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kampfer.provide('mindMap.MapsManager');
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/*
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* 负责维护localStorage
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* MapsManager提供的查询方法返回的都是对数据的引用，因此它们都是只读的。
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* 绝对不要直接对它们进行写操作。
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* localStorage目前维护两部分内容:
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* 1. map的信息
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* 2. clipboard的信息
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*/
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kampfer.mindMap.MapsManager = kampfer.Class.extend({
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initializer : function(appName) {
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if(appName) {
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this._appName = appName;
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}
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},
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_appName : 'mindMap',
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getAppName : function() {
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return this._appName;
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},
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//从localStorage中读取mindMap保存的数据。
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//如果没有任何数据，那么就创建一个新的空的数据对象，并将它写入 localStorage。
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getMapStorage : function() {
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var mapStore = kampfer.store.get(this._appName);
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if(!mapStore) {
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mapStore = {};
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mapStore.maps = {};
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mapStore.maps._count = 0;
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kampfer.store.set(this._appName, mapStore);
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}
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return mapStore;
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},
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getMapData : function(name) {
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var mapStore = this.getMapStorage();
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if(name) {
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return mapStore.maps[name];
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}
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},
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//只接受object作为参数
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saveMapToLocalStorage : function(data) {
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if( kampfer.type(data) === 'object' ) {
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var mapStorage = this.getMapStorage(),
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name = data.name;
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if( !(name in mapStorage.maps) ) {
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mapStorage.maps._count++;
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}
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mapStorage.maps[name] = data;
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kampfer.store.set(this._appName, mapStorage);
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}
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},
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getMapCount : function() {
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var mapStorage = this.getMapStorage();
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return mapStorage.maps._count;
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},
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//返回包含所有map名字的数组
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getMapList : function() {
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var mapStorage = this.getMapStorage();
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if(mapStorage.maps._count > 0) {
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var ret = [];
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for(var map in mapStorage.maps) {
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if( map !== '_count') {
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ret.push(mapStorage.maps[map]);
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}
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}
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return ret;
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}
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},
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hasMap : function(mapName) {
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var mapStore = kampfer.store.get(this._appName);
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if(mapStore) {
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if(mapName in mapStore.maps) {
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return true;
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}
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}
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return false;
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},
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removeMap : function(mapName) {
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if( this.hasMap(mapName) ) {
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var mapStore = kampfer.store.get(this._appName);
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delete mapStore.maps[mapName];
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kampfer.store.set(this._appName, mapStore);
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}
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},
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setClipboard : function(data) {
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var mapStore = kampfer.store.get(this._appName);
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if(mapStore) {
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mapStore.clipboard = data;
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kampfer.store.set(this._appName, mapStore);
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}
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},
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getClipboard : function() {
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var mapStore = kampfer.store.get(this._appName);
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if(mapStore && mapStore.clipboard) {
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return mapStore.clipboard;
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}
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},
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removeClipboard : function() {
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var mapStore = kampfer.store.get(this._appName);
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if(mapStore && mapStore.clipboard) {
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delete mapStore.clipboard;
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kampfer.store.set(this._appName, mapStore);
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}
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}
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}); |