From 2d9cb9ca8f6beb661a3d904b5125afa8243661de Mon Sep 17 00:00:00 2001
From: Jon Reid
Date: Wed, 21 Mar 2012 15:40:33 -0700
Subject: Timeline: First integration of drag and drop of layers.

---
 js/panels/Timeline/DragDrop.js | 136 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 136 insertions(+)
 create mode 100644 js/panels/Timeline/DragDrop.js

(limited to 'js/panels/Timeline/DragDrop.js')

diff --git a/js/panels/Timeline/DragDrop.js b/js/panels/Timeline/DragDrop.js
new file mode 100644
index 00000000..55ee3ab4
--- /dev/null
+++ b/js/panels/Timeline/DragDrop.js
@@ -0,0 +1,136 @@
+/* <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;
+var Composer = require("montage/ui/composer/composer").Composer;
+
+exports.DragDropComposer = Montage.create(Composer, {
+
+    draggable: {
+        value: true
+    },
+
+    droppable: {
+        value: true
+    },
+
+    identifier: {
+        value: "generic"
+    },
+
+    _dragover: {
+        value: false
+    },
+
+    load: {
+        value: function() {
+            //TODO: to make this work even better check to see if this is a component or not
+            //right now it does not support data-montage id's
+            this.element.addEventListener("mouseover", this, true);
+            this.element.addEventListener("mouseout", this, true);
+            this.component.element.addEventListener("dragenter", this, true);
+            this.component.element.addEventListener("dragleave", this, true);
+            this.component.element.addEventListener("dragend", this, true);
+            this.component.element.addEventListener("drop", this, true);
+            this.component.element.addEventListener("dragover", this, true);
+            this.component.element.addEventListener("dragstart", this, true);
+        }
+    },
+
+    unload: {
+        value: function() {
+            this.element.removeEventListener("mouseover", this, true);
+            this.element.removeEventListener("mouseout", this, true);
+            this.component.element.removeEventListener("dragenter", this, true);
+            this.component.element.removeEventListener("dragleave", this, true);
+            this.component.element.removeEventListener("dragend", this, true);
+            this.component.element.removeEventListener("drop", this, true);
+            this.component.element.removeEventListener("dragover", this, true);
+            this.component.element.removeEventListener("dragstart", this, true);
+        }
+    },
+
+    captureMouseover: {
+        value: function(e) {
+            if(this.draggable) {
+                this.component.element.draggable = true;
+            }
+        }
+    },
+
+    captureMouseout: {
+        value: function(e) {
+            this.component.element.draggable = false;
+        }
+    },
+
+    /* ------ Drag Drop Events ------- */
+
+    // This Function will determine what is being moved
+    captureDragstart: {
+        value:function(e) {
+            e.dataTransfer.effectAllowed = 'move';
+            e.dataTransfer.setData('Text', this.identifier);
+            this.component.element.classList.add("dragging");
+            this.component.application.ninja.componentBeingDragged = this.component;
+        }
+    },
+
+    captureDragenter: {
+        value: function(e) {
+
+        }
+    },
+
+    captureDragover: {
+        value:function(e) {
+            e.preventDefault();
+            e.stopImmediatePropagation();
+            if (!this._dragover) {
+                this._dragover = true;
+                this.component.element.classList.add("dragOver");
+            }
+        }
+    },
+
+    captureDragleave: {
+        value: function(e) {
+            if (this._dragover) {
+                this._dragover = false;
+                this.component.element.classList.remove("dragOver");
+            }
+        }
+    },
+
+    captureDrop: {
+        value:function(e) {
+            e.stopPropagation(); // Stops some browsers from redirecting.
+            e.preventDefault();
+            if (this._dragover) {
+                this._dragover = false;
+                this.component.element.classList.remove("dragOver");
+                if (this.identifier === e.dataTransfer.getData("Text")) {
+                    if(this.component.application.ninja.componentBeingDragged !== this.component) {
+                        dropEvent = document.createEvent("CustomEvent");
+                        dropEvent.initCustomEvent("dropped", true, false, null);
+                        dropEvent.draggedComponent = this.component.application.ninja.componentBeingDragged;
+                        dropEvent.droppedComponent = this.component;
+                        this.component.dispatchEvent(dropEvent);
+                    }
+                }
+                this.component.application.ninja.componentBeingDragged = null;
+            }
+
+        }
+    },
+
+    captureDragend: {
+        value:function(e) {
+            this.component.element.classList.remove("dragging");
+        }
+    }
+
+});
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