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gaia/apps/verticalhome/js/app_manager.js

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+/* global ConfirmDialogHelper */
+/* global BookmarksDatabase */
+
+'use strict';
+
+(function(exports) {
+
+  function AppManager() {
+    var grid = document.querySelector('gaia-grid');
+    var self = this;
+    navigator.mozApps.getSelf().onsuccess = function(evt) {
+      self.app = evt.target.result;
+      window.dispatchEvent(new CustomEvent('appmanager-ready'));
+    };
+
+    grid.addEventListener('removeitem', this);
+  }
+
+  AppManager.prototype = {
+    dialogVisible: false,
+
+    get self() {
+      return this.app;
+    },
+
+    /**
+    Handles the asyncrhonous removal of items on the grid after the DOM element
+    has been removed.
+    */
+    handleItemRemoval: function(item) {
+      function errorLogger(err) {
+        console.error('Error while trying to remove', item.name, err);
+      }
+
+      switch (item.detail.type) {
+        case 'bookmark':
+          BookmarksDatabase.remove(item.identifier).catch(errorLogger);
+          break;
+        default:
+          console.error(
+            'Cannot handle remove for item type ',
+            item.detail.type
+          );
+      }
+    },
+
+    /**
+     * General event handler.
+     */
+    handleEvent: function(e) {
+      var nameObj = {
+        name: e.detail && e.detail.name
+      };
+
+      switch(e.type) {
+        case 'removeitem':
+          if (this.dialogVisible) {
+            return;
+          }
+
+          this.dialogVisible = true;
+          if (e.detail.detail.type == 'app') {
+            var request = navigator.mozApps.mgmt.uninstall(e.detail.app);
+            request.onsuccess = () => {
+              e.detail.removeFromGrid();
+              this.dialogVisible = false;
+            };
+            request.onerror = () => {
+              console.error('Error while trying to remove',
+                            e.detail.name, request.error);
+              this.dialogVisible = false;
+            };
+            break;
+          }
+          var dialog = new ConfirmDialogHelper({
+            type: 'remove',
+            title: {id: 'delete-title', args: nameObj},
+            body: {id: 'delete-body', args: nameObj},
+            cancel: {
+              title: 'cancel',
+              cb: () => {
+                this.dialogVisible = false;
+              }
+            },
+            confirm: {
+              title: 'delete',
+              type: 'danger',
+              cb: () => {
+                // immediately remove item from the grid!
+                e.detail.removeFromGrid();
+
+                // handle the real removal asynchronously
+                this.handleItemRemoval(e.detail);
+
+                this.dialogVisible = false;
+              }
+            }
+          });
+          dialog.show(document.body);
+          break;
+      }
+    }
+  };
+
+  exports.appManager = new AppManager();
+
+}(window));