Add drag and drop support

css/styles.css

@@ -10,6 +10,16 @@ body:after {
 	float: left;
 }
 
+.breadcrumbs-droppable {
+
+}
+
+.breadcrumbs-droppable-hover {
+	transform: scale(1.1);
+	-webkit-transition: transform .1s ease-in;
+	transition: transform .1s ease-in;
+}
+
 div.crumb.last a {
 	cursor: default;
 }
@@ -91,22 +101,56 @@ div.crumb.last a {
 	margin-left: 4px;
 }
 
-#gallery .row > a {
+a.row-element {
 	position: relative;
 	display: inline-block;
 	height: auto;
 	padding: 0;
 	margin: 2px;
 	vertical-align: top;
+	-webkit-transition: transform .2s ease-in-out;
+	transition: transform .2s ease-in-out;
+	-webkit-user-select:none;
+	-moz-user-select:none;
+	-ms-user-select:none;
+	user-select:none;
+	-webkit-touch-callout:none;
+}
+
+.album-droppable {
+	transform: scale(0.9);
+	-webkit-transform: scale(0.9);
+}
+
+.album-droppable .album {
+	background: repeating-linear-gradient(
+			45deg,
+			transparent,
+			transparent 20px,
+			rgba(0, 0, 0, .3) 20px,
+			rgba(0, 0, 0, .3) 40px
+	);
+}
+
+.album-droppable .album .cropped {
+	transform: scale(0.9);
+	-webkit-transform: scale(0.9);
+}
+
+.album-droppable-hover {
+	transform: scale(1.0);
+	-webkit-transform: scale(1.0);
+	-webkit-transition: transform .1s ease-in;
+	transition: transform .1s ease-in;
 }
 
-#gallery .row > a .container {
+a.row-element .container {
 	-webkit-transition: all .2s ease-in-out;
 	transition: all .2s ease-in-out;
 }
 
-#gallery .row > a > .album-loader,
-#gallery .row > a > .image-loader {
+a.row-element > .album-loader,
+a.row-element > .image-loader {
 	position: absolute;
 	z-index: 11;
 	top: 0;
@@ -115,7 +159,7 @@ div.crumb.last a {
 	right: 0;
 }
 
-#gallery .row > a > .album-label {
+a.row-element > .album-label {
 	color: #fff;
 	position: absolute;
 	left: 0;
@@ -131,7 +175,7 @@ div.crumb.last a {
 	z-index: 11;
 }
 
-#gallery .row > a > .image-label {
+a.row-element > .image-label {
 	display: none;
 	position: absolute;
 	left: 0;
@@ -144,8 +188,8 @@ div.crumb.last a {
 	word-break: break-all;
 }
 
-#gallery .row > a > .album-label,
-#gallery .row > a > .image-label {
+a.row-element > .album-label,
+a.row-element > .image-label {
 	position: absolute;
 	width: 100%;
 	height: 100%;
@@ -154,8 +198,8 @@ div.crumb.last a {
 	background-image: linear-gradient(rgba(0,0,0,0) 65%,rgba(0,0,0,0.35));
 }
 
-#gallery .row > a > .image-label .title,
-#gallery .row > a > .album-label .title {
+a.row-element > .image-label .title,
+a.row-element > .album-label .title {
 	display: inline-block;
 	color: #fff;
 	text-align: center;
@@ -170,13 +214,13 @@ div.crumb.last a {
 	position: absolute;
 }
 
-#gallery .row > a > .image-label .title:hover,
-#gallery .row > a > .album-label .title:hover {
+a.row-element > .image-label .title:hover,
+a.row-element > .album-label .title:hover {
 	overflow: visible;
 	white-space: normal;
 }
 
-#gallery .row > a > .album > img {
+a.row-element > .album > img {
 	max-width: 200px;
 	max-height: 200px;
 	position: relative;
@@ -185,12 +229,12 @@ div.crumb.last a {
 }
 
 /* make focus visible for keyboard users */
-#gallery .row > a:focus,
-#gallery .row > a > .album:focus {
+a.row-element:focus,
+a.row-element > .album:focus {
 	opacity: .5;
 }
 
-#gallery .row > a .image > img {
+a.row-element .image > img {
 	max-height: 200px;
 }
 
@@ -201,16 +245,16 @@ div.crumb.last a {
 	transition: opacity 500ms;
 }
 
-#gallery .row > a .album .cropped {
+a.row-element .album .cropped {
 	position: relative;
 	float: left;
 	margin: 1px;
 	background-position: center;
 	background-size: cover;
 }
 
-#gallery .row > a .album .icon-loading,
-#gallery .row > a .icon-loading {
+a.row-element .album .icon-loading,
+a.row-element .icon-loading {
 	margin: auto;
 	position: absolute;
 	top: 0;

js/breadcrumb.js

@@ -36,6 +36,13 @@
 		ellipsis: null,
 		albumPath: null,
 		availableWidth: 0,
+		onClick: null,
+		droppableOptions: {
+			accept: "#gallery > .row > a",
+			activeClass: 'breadcrumbs-droppable',
+			hoverClass: 'breadcrumbs-droppable-hover',
+			tolerance: 'pointer'
+		},
 
 		/**
 		 * Initialises the breadcrumbs for the current album
@@ -66,6 +73,41 @@
 			}
 		},
 
+		/**
+		 * Processes UI elements dropped on the breadcrumbs
+		 *
+		 * @param event
+		 * @param ui
+		 */
+		onDrop: function (event, ui) {
+			var $item = ui.draggable;
+			var $clone = ui.helper;
+			var $target = $(event.target);
+			if (!$target.is('.crumb')) {
+				$target = $target.closest('.crumb');
+			}
+			var targetPath = $(event.target).data('dir');
+			var dir = Gallery.currentAlbum;
+
+			while (dir.substr(0, 1) === '/') {//remove extra leading /'s
+				dir = dir.substr(1);
+			}
+			dir = '/' + dir;
+			if (dir.substr(-1, 1) !== '/') {
+				dir = dir + '/';
+			}
+			// Do nothing if dragged on current dir
+			if (targetPath === dir || targetPath + '/' === dir) {
+				return;
+			}
+			var filePath = $item.data('path');
+			var fileName = OC.basename(filePath);
+
+			$clone.fadeOut("normal", function () {
+				Gallery.move($item, fileName, filePath, $target, targetPath);
+			});
+		},
+
 		/**
 		 * Builds the breadcrumbs array
 		 *
@@ -170,6 +212,9 @@
 			});
 
 			this.breadcrumbsElement.append(breadcrumbs);
+
+			this.droppableOptions.drop = this.onDrop.bind(this);
+			this.breadcrumbsElement.find('.crumb:not(.last)').droppable(this.droppableOptions);
 		},
 
 		/**

js/gallery.js

@@ -13,6 +13,7 @@
 		activeSlideShow: null,
 		buttonsWidth: 350,
 		browserToolbarHeight: 150,
+		filesClient: OC.Files.getClient(),
 
 		/**
 		 * Refreshes the view and starts the slideshow if required
@@ -377,6 +378,47 @@
 			document.activeElement.blur();
 		},
 
+		/**
+		 * Moves files and albums to a new location
+		 *
+		 * @param {jQuery} $item
+		 * @param {string} fileName
+		 * @param {string} filePath
+		 * @param {jQuery} $target
+		 * @param {string} targetPath
+		 */
+		move: function ($item, fileName, filePath, $target, targetPath) {
+			var self = this;
+			var dir = Gallery.currentAlbum;
+
+			if (targetPath.charAt(targetPath.length - 1) !== '/') {
+				// make sure we move the files into the target dir,
+				// not overwrite it
+				targetPath = targetPath + '/';
+			}
+			self.filesClient.move(dir + '/' + fileName, targetPath + fileName)
+				.done(function () {
+					self._removeElement(dir, filePath, $item);
+				})
+				.fail(function (status) {
+					if (status === 412) {
+						// TODO: some day here we should invoke the conflict dialog
+						OC.Notification.showTemporary(
+							t('gallery', 'Could not move "{file}", target exists', {file: fileName})
+						);
+					} else {
+						OC.Notification.showTemporary(
+							t('gallery', 'Could not move "{file}"', {file: fileName})
+						);
+					}
+					$item.fadeTo("normal", 1);
+					$target.children('.album-loader').hide();
+				})
+				.always(function () {
+					// Nothing?
+				});
+		},
+
 		/**
 		 * Builds the album's model
 		 *
@@ -527,6 +569,45 @@
 						}
 					});
 			}
+		},
+
+		/**
+		 * Removes the moved element from the UI and refreshes the view
+		 *
+		 * @param {string} dir
+		 * @param {string}filePath
+		 * @param {jQuery} $item
+		 * @private
+		 */
+		_removeElement: function (dir, filePath, $item) {
+			var images = Gallery.albumMap[Gallery.currentAlbum].images;
+			var albums = Gallery.albumMap[Gallery.currentAlbum].subAlbums;
+			// if still viewing the same directory
+			if (Gallery.currentAlbum === dir) {
+				var removed = false;
+				// We try to see if an image was removed
+				var movedImage = _(images).findIndex({path: filePath});
+				if (movedImage >= 0) {
+					images.splice(movedImage, 1);
+					removed = true;
+				} else {
+					// It wasn't an image, so try to remove an album
+					var movedAlbum = _(albums).findIndex({path: filePath});
+					if (movedAlbum >= 0) {
+						albums.splice(movedAlbum, 1);
+						removed = true;
+					}
+				}
+
+				if (removed) {
+					$item.remove();
+					// Refresh the photowall without checking if new files have arrived in the
+					// current album
+					// TODO On the next visit this album is going to be reloaded, unless we can get
+					// an etag back from the move endpoint
+					Gallery.view.init(Gallery.currentAlbum);
+				}
+			}
 		}
 	};
 	window.Gallery = Gallery;