tree-view-controllet.html
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<link rel="import" href="../../bower_components/polymer/polymer.html" />
<link rel="import" href="../../bower_components/iron-collapse/iron-collapse.html">
<link rel="import" href="../../bower_components/paper-menu/paper-menu.html">
<link rel="import" href="../../bower_components/paper-menu/paper-submenu.html">
<link rel="import" href="../../bower_components/paper-item/paper-item.html">
<dom-module id="tree-view-controllet">
<style is="custom-style">
--paper-item {
}
paper-item {
font-family: 'Roboto', 'Helvetica Neue', Helvetica, Arial, sans-serif;
cursor: pointer;
}
paper-item.menu-trigger {
font-weight: 700;
}
paper-item.menu-trigger.iron-selected {
background-color: #B6B6B6;
}
paper-item:not(.menu-trigger).iron-selected {
background-color: #2196F3;
color: #FFFFFF;
}
.sublist {
padding-left: 20px;
padding-right: 20px;
}
:host{
--paper-menu-focused-item-after: {
opacity: 0;
};
}
</style>
<template>
<paper-menu id="paper_tree"></paper-menu>
</template>
<script>
Polymer({
is : 'tree-view-controllet',
properties : {
rootName : {
type : String,
value : "root"
},
jsonData : {
type : Object,
value : undefined
},
selectedFields : {
type : Array,
value : []
},
preselectedFields : {
type : Array,
value : []
},
openedPath : {
type : String,
value : undefined
}
},
listeners: {
'iron-select': '_onSelect',
'iron-deselect': '_onDeselect'
},
ready : function() {
if(this.jsonData)
this._init();
},
getFields : function() {
return this.selectedFields;
},
getFlatFields : function() {
var fields = [];
for(var A in this.selectedFields)
for(var e in this.selectedFields[A])
fields.push(this.selectedFields[A][e]);
return fields;
},
_init : function() {
this._injectBoundHTML(this._initCreateTree(this.rootName, this.jsonData), this.$.paper_tree);
this._preselectFields();
this._openPath();
},
_injectBoundHTML : function(html, element) {
var template = document.createElement('template');
template.innerHTML = html;
var fragment = this.instanceTemplate(template);
if (element) {
element.textContent = '';
element.appendChild(fragment);
}
return fragment;
},
_initCreateTree : function(nodeName, node) {
var list = new Array();
for(var child in node)
list.push(this._createTree(child, node[child]));
return this._paper_submenu(nodeName, list);
},
_createTree : function(nodeName, node) {
var html = "";
if(!node){
html = nodeName;
}
else if(node.constructor == Object){
var list = new Array();
for(var child in node)
list.push(this._createTree(nodeName+","+child, node[child]));
html = this._paper_submenu(nodeName, list);
}
else if (node.constructor == Array){
var list = new Array();
if(node[0].constructor == Object){
for(var child in node[0])
list.push(this._createTree(nodeName+","+child, node[0][child]));
html = this._paper_submenu(nodeName, list);
}
else{
html = nodeName;
}
}
else{
html = nodeName;
}
return html;
},
_paper_submenu : function(str, list) {
var submenu = "<paper-submenu>";
submenu += "<paper-item class=\"menu-trigger\">"+this._getName(str)+"</paper-item>" + "<paper-menu id=\""+str+"\" class=\"menu-content sublist\" multi>";
for(var i in list){
if(list[i].indexOf("paper-submenu") != -1)
submenu += list[i];
else
submenu += this._paper_item(list[i]);
}
submenu += "</paper-menu>" + "</paper-submenu>";
return submenu;
},
_paper_item : function(str){
return "<paper-item id=\""+str+"\">"+this._getName(str)+"</paper-item>";
},
_getName : function (str){
str = str.split(",");
return str[str.length-1];
},
_preselectFields : function() {
if (this.preselectedFields){
for(var field in this.preselectedFields){
var fieldId = this.preselectedFields[field];
var menuId = this.rootName;
if (fieldId.lastIndexOf(",") != -1)
menuId = fieldId.substring(0, fieldId.lastIndexOf(","));
var menu = document.getElementById(menuId);
var field = document.getElementById(fieldId);
var index = menu.items.indexOf(field);
menu.select(index);
}
}
},
_openPath : function() {
this.$.paper_tree.firstChild.open();
if (this.openedPath) {
var openedPath = this.openedPath;
var nodes = openedPath.split(",");
openedPath = "";
while (nodes.length != 0) {
openedPath += nodes.splice(0, 1);
var menu = document.getElementById(openedPath);
var submenu = menu.parentNode.parentNode;
submenu.open();
openedPath += ",";
}
}
},
_onSelect : function(e) {
this._updateSelectedFields(e);
},
_onDeselect : function(e) {
this._updateSelectedFields(e);
},
_updateSelectedFields : function(e) {
var menuId = e.target.id;
var selectedIds = [];
var selectedItems = (e.target).selectedItems;
for(var item in selectedItems){
var id = selectedItems[item].id;
if(id != "")//submenu
selectedIds.push(id);
}
var prevLength;
if(this.selectedFields[menuId])
prevLength = this.selectedFields[menuId].length;
else
prevLength = 0;
var currLength = selectedIds.length
if(prevLength != currLength) {
if (selectedIds.length)
this.selectedFields[menuId] = selectedIds;
else
delete this.selectedFields[menuId];
this.fire('tree-view-controllet_selected-fields', {fields: this.getFlatFields()});
}
}
});
</script>
</dom-module>