/*
This file is part of Ext JS 3.4

Copyright (c) 2011-2013 Sencha Inc

Contact:  http://www.sencha.com/contact

GNU General Public License Usage
This file may be used under the terms of the GNU General Public License version 3.0 as
published by the Free Software Foundation and appearing in the file LICENSE included in the
packaging of this file.

Please review the following information to ensure the GNU General Public License version 3.0
requirements will be met: http://www.gnu.org/copyleft/gpl.html.

If you are unsure which license is appropriate for your use, please contact the sales department
at http://www.sencha.com/contact.

Build date: 2013-04-03 15:07:25
*/
Ext.onReady(function(){

    Ext.QuickTips.init();
    // Album toolbar
    var newIndex = 3;
    var tb = new Ext.Toolbar({
        items:[{
            text: 'New Album',
            iconCls: 'album-btn',
            handler: function(){
                var node = root.appendChild(new Ext.tree.TreeNode({
                    text:'Album ' + (++newIndex),
                    cls:'album-node',
                    allowDrag:false
                }));
                tree.getSelectionModel().select(node);
                setTimeout(function(){
                    ge.editNode = node;
                    ge.startEdit(node.ui.textNode);
                }, 10);
            }
        }]
    });

    // set up the Album tree
    var tree = new Ext.tree.TreePanel({
         // tree
         animate:true,
         enableDD:true,
         containerScroll: true,
         ddGroup: 'organizerDD',
         rootVisible:false,
         // layout
         region:'west',
         width:200,
         split:true,
         // panel
         title:'My Albums',
         autoScroll:true,
         tbar: tb,
         margins: '5 0 5 5'
    });

    var root = new Ext.tree.TreeNode({
        text: 'Albums',
        allowDrag:false,
        allowDrop:false
    });
    tree.setRootNode(root);

    root.appendChild(
        new Ext.tree.TreeNode({text:'Album 1', cls:'album-node', allowDrag:false}),
        new Ext.tree.TreeNode({text:'Album 2', cls:'album-node', allowDrag:false}),
        new Ext.tree.TreeNode({text:'Album 3', cls:'album-node', allowDrag:false})
    );

    // add an inline editor for the nodes
    var ge = new Ext.tree.TreeEditor(tree, {/* fieldconfig here */ }, {
        allowBlank:false,
        blankText:'A name is required',
        selectOnFocus:true
    });

    // Set up images view

    var view = new Ext.DataView({
        itemSelector: 'div.thumb-wrap',
        style:'overflow:auto',
        multiSelect: true,
        plugins: new Ext.DataView.DragSelector({dragSafe:true}),
        store: new Ext.data.JsonStore({
            url: '../view/get-images.php',
            autoLoad: true,
            root: 'images',
            id:'name',
            fields:[
                'name', 'url',
                {name: 'shortName', mapping: 'name', convert: shortName}
            ]
        }),
        tpl: new Ext.XTemplate(
            '<tpl for=".">',
            '<div class="thumb-wrap" id="{name}">',
            '<div class="thumb"><img src="../view/{url}" class="thumb-img"></div>',
            '<span>{shortName}</span></div>',
            '</tpl>'
        )
    });

    var images = new Ext.Panel({
        id:'images',
        title:'My Images',
        region:'center',
        margins: '5 5 5 0',
        layout:'fit',
        
        items: view
    });

    var layout = new Ext.Panel({
        layout: 'border',
        width:650,
        height:400,
        items: [tree, images]
    });

    layout.render('layout');

    var dragZone = new ImageDragZone(view, {containerScroll:true,
        ddGroup: 'organizerDD'});
});



/**
 * Create a DragZone instance for our JsonView
 */
ImageDragZone = function(view, config){
    this.view = view;
    ImageDragZone.superclass.constructor.call(this, view.getEl(), config);
};
Ext.extend(ImageDragZone, Ext.dd.DragZone, {
    // We don't want to register our image elements, so let's 
    // override the default registry lookup to fetch the image 
    // from the event instead
    getDragData : function(e){
        var target = e.getTarget('.thumb-wrap');
        if(target){
            var view = this.view;
            if(!view.isSelected(target)){
                view.onClick(e);
            }
            var selNodes = view.getSelectedNodes();
            var dragData = {
                nodes: selNodes
            };
            if(selNodes.length == 1){
                dragData.ddel = target;
                dragData.single = true;
            }else{
                var div = document.createElement('div'); // create the multi element drag "ghost"
                div.className = 'multi-proxy';
                for(var i = 0, len = selNodes.length; i < len; i++){
                    div.appendChild(selNodes[i].firstChild.firstChild.cloneNode(true)); // image nodes only
                    if((i+1) % 3 == 0){
                        div.appendChild(document.createElement('br'));
                    }
                }
                var count = document.createElement('div'); // selected image count
                count.innerHTML = i + ' images selected';
                div.appendChild(count);
                
                dragData.ddel = div;
                dragData.multi = true;
            }
            return dragData;
        }
        return false;
    },

    // this method is called by the TreeDropZone after a node drop
    // to get the new tree node (there are also other way, but this is easiest)
    getTreeNode : function(){
        var treeNodes = [];
        var nodeData = this.view.getRecords(this.dragData.nodes);
        for(var i = 0, len = nodeData.length; i < len; i++){
            var data = nodeData[i].data;
            treeNodes.push(new Ext.tree.TreeNode({
                text: data.name,
                icon: '../view/'+data.url,
                data: data,
                leaf:true,
                cls: 'image-node'
            }));
        }
        return treeNodes;
    },
    
    // the default action is to "highlight" after a bad drop
    // but since an image can't be highlighted, let's frame it 
    afterRepair:function(){
        for(var i = 0, len = this.dragData.nodes.length; i < len; i++){
            Ext.fly(this.dragData.nodes[i]).frame('#8db2e3', 1);
        }
        this.dragging = false;    
    },
    
    // override the default repairXY with one offset for the margins and padding
    getRepairXY : function(e){
        if(!this.dragData.multi){
            var xy = Ext.Element.fly(this.dragData.ddel).getXY();
            xy[0]+=3;xy[1]+=3;
            return xy;
        }
        return false;
    }
});

// Utility functions

function shortName(name){
    if(name.length > 15){
        return name.substr(0, 12) + '...';
    }
    return name;
};
