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Mini Shell
Mini Shell
/*global kampfer*/
kampfer.require('Class');
kampfer.provide('mindMap.MapManager');
/*
* MapManager类为mindmap提供数据支持。
* 注意:1.MapManager依赖的第三方组件store.js依赖JSON，当浏览器不原生支持JSON时，
* 需要额外引入JSON.js实现兼容。
* 2.MapManager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，绝对不要直接
* 对它们进行写操作。
*/
kampfer.mindMap.MapManager = kampfer.Class.extend({
/**
* 实例化一个MapManager对象。
* 当传递给构建函数的参数是一个对象，那么这个对象被用作mindmap数据来源
* @param name{string|object|null}
*/
initializer : function(data) {
this._oriData = data;
data = data || {};
this._nodeTree = data.document || [];
this._mapName = data.name;
this._lastModified = data.lastModified || +new Date();
//map用于快速查找
this._nodeMap = this.parseTree(this._nodeTree);
this._isModified = false;
},
_isModified : null,
//重命名map的时候先改变_mapName.保存时会检查_mapName和_mapData.name的一致性,
//两者如果不一致那么会删除localstore中名字叫_mapData.name的数据.并将_mapName
//和_mapData.name同步. 这个过程需要同时保存新名字和旧名字,_mapName保存新名字
//_mapData.name是旧名字。
_mapName : null,
//解析原始数据, 通过tree生成map
parseTree : function(data) {
var map = {};
for(var i = 0, root; (root = data[i]); i++) {
this.traverseNode(root, function(node) {
map[node.id] = node;
});
}
return map;
},
isModified : function() {
return this._isModified;
},
getMapName : function() {
return this._mapName;
},
getNode : function(id) {
return this._nodeMap[id];
},
getChildren : function(id) {
if(id) {
var node = this.getNode(id);
return node.children;
}
},
getNodeTree : function() {
return this._nodeTree;
},
//如果有同id的node那么新的node不会被添加
addNode : function(node) {
if( kampfer.type(node) === 'object' && !this.getNode(node.id) ) {
var parent = this.getNode(node.parent);
//add node to nodeTree
if(parent) {
if(!parent.children) {
parent.children = [];
}
parent.children.push(node);
} else {
this._nodeTree.push(node);
}
//保存node和它的子节点的引用
this.traverseNode(node, function(node) {
if( !(node.id in this._nodeMap) ) {
this._nodeMap[node.id] = node;
}
});
this._isModified = true;
}
},
createNode : function(data) {
var node = {
id : this.generateUniqueId(),
parent : null,
children : null,
content : 'node',
offset : {
x : 100,
y : 100
}
},
type = kampfer.type(data);
if( type === 'object' ) {
for(var attr in node) {
if(attr in data) {
if(attr === 'offset') {
node[attr].x = data[attr].x;
node[attr].y = data[attr].y;
} else {
node[attr] = data[attr];
}
}
}
} else if( type === 'string' ) {
node.parent = data;
}
return node;
},
//此方法会立即改变children数组的长度
deleteNode : function(id) {
var node = this.getNode(id), parent, nodeList;
if(!node) {
return;
}
parent = this.getNode(node.parent);
if(!parent) {
nodeList = this._nodeTree;
} else if(parent.children) {
nodeList = parent.children;
}
if(nodeList) {
//delete node from tree
for(var i = 0, c; (c = nodeList[i]); i++) {
if(c.id === id) {
nodeList.splice(i, 1);
break;
}
}
}
//delete node from map
this.traverseNode(node, function(node) {
delete this._nodeMap[node.id];
});
this._isModified = true;
return node;
},
setNodeContent : function(id, text) {
var node = this.getNode(id);
node.content = text;
this._isModified = true;
},
getNodeContent : function(id) {
var node = this.getNode(id);
return node.content;
},
setNodePosition : function(id, x, y) {
if(kampfer.type(id) === 'object') {
id = id.id;
}
var node = this.getNode(id);
node.offset.x = x;
node.offset.y = y;
this._isModified = true;
},
//传值
getNodePosition : function(id) {
var node = this.getNode(id);
return {
left : node.offset.x,
top : node.offset.y
};
},
setMapName : function(name) {
this._mapName = name;
this._isModified = true;
},
getMapData : function() {
return {
document : this._nodeTree,
name : this._mapName,
lastModified : this._lastModified
};
},
traverseNode : function(node, callback, forward) {
if(forward) {
callback.call(this, node);
}
if(node.children) {
for(var i = 0, child; (child = node.children[i]); i++) {
this.traverseNode(child, callback, forward);
}
}
if(!forward) {
callback.call(this, node);
}
},
traverse : function(callback) {
for(var i = 0, node; (node = this._nodeTree[i]); i++) {
this.traverseNode(node, callback, true);
}
},
/*
* 生成唯一id
* 直接使用时间戳不可行
* 以下方法摘自http://www.cnblogs.com/NoRoad/archive/2010/03/12/1684759.html
*/
generateUniqueId : function() {
var guid = "";
for(var i = 1; i <= 32; i++) {
var n = Math.floor(Math.random() * 16.0).toString(16);
guid += n;
if((i == 8) || (i == 12) || (i == 16) || (i == 20)) {
guid += "-";
}
}
return guid;
},
dispose : function() {
delete this._oriData;
delete this._nodeTree;
delete this._mapName;
delete this._lastModified;
delete this._nodeMap;
delete this._isModified;
}
});
Zerion Mini Shell 1.0