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gaia/apps/system/lockscreen/js/lockscreen_state_slideshow.js

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+/**
+  Copyright 2012, Mozilla Foundation
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+*/
+
+/* global LockScreenBaseState */
+
+'use strict';
+
+/**
+ * This state would guarantee the LockScreen shows the slide.
+ */
+(function(exports) {
+
+  var LockScreenStateSlideShow = function() {
+    LockScreenBaseState.apply(this, arguments);
+  };
+  LockScreenStateSlideShow.prototype =
+    Object.create(LockScreenBaseState.prototype);
+
+  LockScreenStateSlideShow.prototype.start = function(lockScreen) {
+    this.type = 'slideShow';
+    this.lockScreen = lockScreen;
+    this.lockScreen.nextStep(() => {
+      this.stopWhenActivated(this.lockScreen._unlocker);
+    });
+    return this;
+  };
+
+  /**
+   * Slider should be stopped until the manager do
+   * the decision to transfer to which state. And we
+   * stop it because the slideshow is the only state
+   * that shows the slider, so to stop it before doing
+   * any decision.
+   **/
+  LockScreenStateSlideShow.prototype.stopWhenActivated =
+  function lssss_stopWhenActivated(unlocker) {
+    var stopIt = function stopIt() {
+      unlocker._stop();
+      window.removeEventListener('lockscreenslide-activate-left', stopIt);
+      window.removeEventListener('lockscreenslide-activate-right', stopIt);
+    };
+    window.addEventListener('lockscreenslide-activate-left', stopIt);
+    window.addEventListener('lockscreenslide-activate-right', stopIt);
+  };
+
+  LockScreenStateSlideShow.prototype.transferTo =
+  function lssss_transferTo(inputs) {
+    // Only when the lockscreen is ready, we do the things.
+    return this.lockScreen.nextStep(() => {
+      var unlocker = this.lockScreen._unlocker;
+      // Clear passcode while the keypad is hiding.
+      window.dispatchEvent(
+        new CustomEvent('lockscreen-request-inputpad-close'));
+      // Resetting slider before we want to show it again
+      unlocker.reset();
+      // Start it because the slideshow is the only state
+      // that shows the slider, so start it here.
+      unlocker._start();
+
+      // Copy from the original switching method.
+      this.lockScreen.overlay.classList.add('no-transition');
+      this.lockScreen.overlay.dataset.panel = 'main';
+    });
+  };
+
+  exports.LockScreenStateSlideShow = LockScreenStateSlideShow;
+})(window);