Move forum ember app into a subdir, preparing for admin app to exist alongside

ember/forum/app/controllers/composer.js

@@ -0,0 +1,99 @@
+import Ember from 'ember';
+
+export var PositionEnum = {
+  HIDDEN: 'hidden',
+  NORMAL: 'normal',
+  MINIMIZED: 'minimized',
+  FULLSCREEN: 'fullscreen'
+};
+
+export default Ember.Controller.extend(Ember.Evented, {
+  content: null,
+  position: PositionEnum.HIDDEN,
+
+  visible: Ember.computed.or('normal', 'minimized', 'fullscreen'),
+  normal: Ember.computed.equal('position', PositionEnum.NORMAL),
+  minimized: Ember.computed.equal('position', PositionEnum.MINIMIZED),
+  fullscreen: Ember.computed.equal('position', PositionEnum.FULLSCREEN),
+
+  // Switch out the composer's content for a new component. The old
+  // component will be given the opportunity to abort the switch. Note:
+  // there appears to be a bug in Ember where the content binding won't
+  // update in the view if we switch the value out immediately. As a
+  // workaround, we set it to null, and then set it to its new value in the
+  // next run loop iteration.
+  switchContent: function(newContent) {
+    var composer = this;
+    this.confirmExit().then(function() {
+      composer.set('content', null);
+      Ember.run.next(function() {
+        newContent.composer = composer;
+        composer.set('content', newContent);
+      });
+    });
+  },
+
+  // Ask the content component if it's OK to close it, and give it the
+  // opportunity to abort. The content component must respond to the
+  // `willExit(abort)` action, and call `abort()` if we should not proceed.
+  confirmExit: function() {
+    var composer = this;
+    var promise = new Ember.RSVP.Promise(function(resolve, reject) {
+      var content = composer.get('content');
+      if (content) {
+        content.send('willExit', reject);
+      }
+      resolve();
+    });
+    return promise;
+  },
+
+  actions: {
+    show: function() {
+      var composer = this;
+
+      // We do this in the next run loop because we need to wait for new
+      // content to be switched in. See `switchContent` above.
+      Ember.run.next(function() {
+        composer.set('position', PositionEnum.NORMAL);
+        composer.trigger('focus');
+      });
+    },
+
+    hide: function() {
+      this.set('position', PositionEnum.HIDDEN);
+    },
+
+    clearContent: function() {
+      this.set('content', null);
+    },
+
+    close: function() {
+      var composer = this;
+      this.confirmExit().then(function() {
+        composer.send('hide');
+      });
+    },
+
+    minimize: function() {
+      if (this.get('position') !== PositionEnum.HIDDEN) {
+        this.set('position', PositionEnum.MINIMIZED);
+      }
+    },
+
+    fullscreen: function() {
+      if (this.get('position') !== PositionEnum.HIDDEN) {
+        this.set('position', PositionEnum.FULLSCREEN);
+        this.trigger('focus');
+      }
+    },
+
+    exitFullscreen: function() {
+      if (this.get('position') === PositionEnum.FULLSCREEN) {
+        this.set('position', PositionEnum.NORMAL);
+        this.trigger('focus');
+      }
+    }
+  }
+
+});