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/* <copyright>
This file contains proprietary software owned by Motorola Mobility, Inc.<br/>
No rights, expressed or implied, whatsoever to this software are provided by Motorola Mobility, Inc. hereunder.<br/>
(c) Copyright 2011 Motorola Mobility, Inc. All Rights Reserved.
</copyright> */
var Montage = require("montage/core/core").Montage,
Component = require("montage/ui/component").Component,
NJUtils = require("js/lib/NJUtils").NJUtils;
exports.DragDropMediator = Montage.create(Component, {
dropTarget: {
value: null,
writable: true
},
baseX: {
value: null,
writable: true
},
baseY: {
value: null,
writable: true
},
dropDelegate: {
value: null
},
deserializedFromTemplate: {
value: function() {
this.eventManager.addEventListener("appLoaded", this, false);
}
},
handleAppLoaded: {
value: function() {
this.dropTarget = this.application.ninja.stage.drawingCanvas;
this.dropTarget.addEventListener("dragover", this, false);
this.dropTarget.addEventListener("dragend", this, false);
this.dropTarget.addEventListener("drop", this, false);
}
},
handleEvent: {
value: function(event){
event.preventDefault();
event.stopImmediatePropagation();
switch(event.type) {
case "dragover":
return false;
case "dragend":
return false;
case "drop":
this.handleDropEvent(event);
break;
default:
console.log("Default");
break;
}
}
},
handleDropEvent: {
value: function(evt){
var xferString, component, file, files, idx, len;
this.baseX = evt.offsetX - this.application.ninja.stage.userContentLeft;
this.baseY = evt.offsetY - this.application.ninja.stage.userContentTop;
xferString = evt.dataTransfer.getData("text/plain");
if(xferString) {
// If the drop is a component, call the delegate with the top,left coordinates
if(xferString.indexOf("componentDrop") > -1) {
if(this.dropDelegate && typeof this.dropDelegate === 'object') {
this.dropDelegate.handleComponentDrop(this.baseX, this.baseY);
return;
}
}
}
// Verify that browser supports FileReader API.
if (typeof(window.FileReader) === "undefined") {
alert("File API and FileReader APIs are not supported.");
// Exit function since there isn't anything else we can do.
return;
}
files = evt.dataTransfer.files;
len = files.length;
// Loop over all dragged files...
for (idx = 0; idx < len; idx++) {
file = files[idx];
// Only do anything if the current file is an image (or has an image mime-type.
if (file.type.match("^image/")) {
var reader = new FileReader();
// Create a LoadHandler to access each outer file var
reader.onload = this.createLoadHandler(file, this.baseX, this.baseY);
if(file.type.match("^image/svg\\+xml")) {// this is SVG
reader.readAsText(file);
} else{
reader.readAsDataURL(file);
}
}
}
return false;
}
},
createLoadHandler: {
value: function(file, baseX, baseY) {
return function(evt2) {
var domElem = null;
if(file.type.match("^image/svg\\+xml")){ // this is an SVG file
var tempElem = document.createElement("div");
tempElem.innerHTML = evt2.currentTarget.result;
domElem = tempElem.children[0];
NJUtils.makeElementModel(domElem, "SVG", "block");
} else { // treat as a regular image
domElem = NJUtils.makeNJElement("image", "image", "image");
domElem.src = evt2.currentTarget.result;
}
// Not sure we need an ID for the image
/*
// Use the Image filename if valid for the id
var filename = file.fileName.substr(0, file.fileName.lastIndexOf('.')) || file.fileName;
filename = filename.replace(/ /g,"_");
if(this.isValidFilename(filename)) {
//domElem.id = filename;
} else {
//domElem.id = DocumentControllerModule.DocumentController.CreateElementID(img.tagName);
}
*/
var rules = {
'position': 'absolute',
'top' : baseY + 'px',
'left' : baseX + 'px',
'-webkit-transform-style' : 'preserve-3d',
'-webkit-transform' : 'perspective(1400) matrix3d(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1)'
};
NJevent("elementAdding", {el: domElem, data:rules});
};
}
},
isValidFilename: {
value: function(id){
if(id && id !== "") {
var regexID = /^([a-zA-Z])+([a-zA-Z0-9_\.\:\-])+/;
return(regexID.test(id))
} else {
return false;
}
}
}
});
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