1 files changed, 347 insertions, 0 deletions
diff --git a/devtools/client/animationinspector/animation-panel.js b/devtools/client/animationinspector/animation-panel.js
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index 000000000..25fd84b87
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+++ b/devtools/client/animationinspector/animation-panel.js
@@ -0,0 +1,347 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* vim: set ft=javascript ts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* import-globals-from animation-controller.js */
+/* globals document */
+
+"use strict";
+
+const {AnimationsTimeline} = require("devtools/client/animationinspector/components/animation-timeline");
+const {RateSelector} = require("devtools/client/animationinspector/components/rate-selector");
+const {formatStopwatchTime} = require("devtools/client/animationinspector/utils");
+const {KeyCodes} = require("devtools/client/shared/keycodes");
+
+var $ = (selector, target = document) => target.querySelector(selector);
+
+/**
+ * The main animations panel UI.
+ */
+var AnimationsPanel = {
+  UI_UPDATED_EVENT: "ui-updated",
+  PANEL_INITIALIZED: "panel-initialized",
+
+  initialize: Task.async(function* () {
+    if (AnimationsController.destroyed) {
+      console.warn("Could not initialize the animation-panel, controller " +
+                   "was destroyed");
+      return;
+    }
+    if (this.initialized) {
+      yield this.initialized;
+      return;
+    }
+
+    let resolver;
+    this.initialized = new Promise(resolve => {
+      resolver = resolve;
+    });
+
+    this.playersEl = $("#players");
+    this.errorMessageEl = $("#error-message");
+    this.pickerButtonEl = $("#element-picker");
+    this.toggleAllButtonEl = $("#toggle-all");
+    this.playTimelineButtonEl = $("#pause-resume-timeline");
+    this.rewindTimelineButtonEl = $("#rewind-timeline");
+    this.timelineCurrentTimeEl = $("#timeline-current-time");
+    this.rateSelectorEl = $("#timeline-rate");
+
+    this.rewindTimelineButtonEl.setAttribute("title",
+      L10N.getStr("timeline.rewindButtonTooltip"));
+
+    $("#all-animations-label").textContent = L10N.getStr("panel.allAnimations");
+
+    // If the server doesn't support toggling all animations at once, hide the
+    // whole global toolbar.
+    if (!AnimationsController.traits.hasToggleAll) {
+      $("#global-toolbar").style.display = "none";
+    }
+
+    // Binding functions that need to be called in scope.
+    for (let functionName of ["onKeyDown", "onPickerStarted",
+      "onPickerStopped", "refreshAnimationsUI", "onToggleAllClicked",
+      "onTabNavigated", "onTimelineDataChanged", "onTimelinePlayClicked",
+      "onTimelineRewindClicked", "onRateChanged"]) {
+      this[functionName] = this[functionName].bind(this);
+    }
+    let hUtils = gToolbox.highlighterUtils;
+    this.togglePicker = hUtils.togglePicker.bind(hUtils);
+
+    this.animationsTimelineComponent = new AnimationsTimeline(gInspector,
+      AnimationsController.traits);
+    this.animationsTimelineComponent.init(this.playersEl);
+
+    if (AnimationsController.traits.hasSetPlaybackRate) {
+      this.rateSelectorComponent = new RateSelector();
+      this.rateSelectorComponent.init(this.rateSelectorEl);
+    }
+
+    this.startListeners();
+
+    yield this.refreshAnimationsUI();
+
+    resolver();
+    this.emit(this.PANEL_INITIALIZED);
+  }),
+
+  destroy: Task.async(function* () {
+    if (!this.initialized) {
+      return;
+    }
+
+    if (this.destroyed) {
+      yield this.destroyed;
+      return;
+    }
+
+    let resolver;
+    this.destroyed = new Promise(resolve => {
+      resolver = resolve;
+    });
+
+    this.stopListeners();
+
+    this.animationsTimelineComponent.destroy();
+    this.animationsTimelineComponent = null;
+
+    if (this.rateSelectorComponent) {
+      this.rateSelectorComponent.destroy();
+      this.rateSelectorComponent = null;
+    }
+
+    this.playersEl = this.errorMessageEl = null;
+    this.toggleAllButtonEl = this.pickerButtonEl = null;
+    this.playTimelineButtonEl = this.rewindTimelineButtonEl = null;
+    this.timelineCurrentTimeEl = this.rateSelectorEl = null;
+
+    resolver();
+  }),
+
+  startListeners: function () {
+    AnimationsController.on(AnimationsController.PLAYERS_UPDATED_EVENT,
+      this.refreshAnimationsUI);
+
+    this.pickerButtonEl.addEventListener("click", this.togglePicker);
+    gToolbox.on("picker-started", this.onPickerStarted);
+    gToolbox.on("picker-stopped", this.onPickerStopped);
+
+    this.toggleAllButtonEl.addEventListener("click", this.onToggleAllClicked);
+    this.playTimelineButtonEl.addEventListener(
+      "click", this.onTimelinePlayClicked);
+    this.rewindTimelineButtonEl.addEventListener(
+      "click", this.onTimelineRewindClicked);
+
+    document.addEventListener("keydown", this.onKeyDown, false);
+
+    gToolbox.target.on("navigate", this.onTabNavigated);
+
+    this.animationsTimelineComponent.on("timeline-data-changed",
+      this.onTimelineDataChanged);
+
+    if (this.rateSelectorComponent) {
+      this.rateSelectorComponent.on("rate-changed", this.onRateChanged);
+    }
+  },
+
+  stopListeners: function () {
+    AnimationsController.off(AnimationsController.PLAYERS_UPDATED_EVENT,
+      this.refreshAnimationsUI);
+
+    this.pickerButtonEl.removeEventListener("click", this.togglePicker);
+    gToolbox.off("picker-started", this.onPickerStarted);
+    gToolbox.off("picker-stopped", this.onPickerStopped);
+
+    this.toggleAllButtonEl.removeEventListener("click",
+      this.onToggleAllClicked);
+    this.playTimelineButtonEl.removeEventListener("click",
+      this.onTimelinePlayClicked);
+    this.rewindTimelineButtonEl.removeEventListener("click",
+      this.onTimelineRewindClicked);
+
+    document.removeEventListener("keydown", this.onKeyDown, false);
+
+    gToolbox.target.off("navigate", this.onTabNavigated);
+
+    this.animationsTimelineComponent.off("timeline-data-changed",
+      this.onTimelineDataChanged);
+
+    if (this.rateSelectorComponent) {
+      this.rateSelectorComponent.off("rate-changed", this.onRateChanged);
+    }
+  },
+
+  onKeyDown: function (event) {
+    // If the space key is pressed, it should toggle the play state of
+    // the animations displayed in the panel, or of all the animations on
+    // the page if the selected node does not have any animation on it.
+    if (event.keyCode === KeyCodes.DOM_VK_SPACE) {
+      if (AnimationsController.animationPlayers.length > 0) {
+        this.playPauseTimeline().catch(ex => console.error(ex));
+      } else {
+        this.toggleAll().catch(ex => console.error(ex));
+      }
+      event.preventDefault();
+    }
+  },
+
+  togglePlayers: function (isVisible) {
+    if (isVisible) {
+      document.body.removeAttribute("empty");
+      document.body.setAttribute("timeline", "true");
+    } else {
+      document.body.setAttribute("empty", "true");
+      document.body.removeAttribute("timeline");
+      $("#error-type").textContent = L10N.getStr("panel.invalidElementSelected");
+      $("#error-hint").textContent = L10N.getStr("panel.selectElement");
+    }
+  },
+
+  onPickerStarted: function () {
+    this.pickerButtonEl.setAttribute("checked", "true");
+  },
+
+  onPickerStopped: function () {
+    this.pickerButtonEl.removeAttribute("checked");
+  },
+
+  onToggleAllClicked: function () {
+    this.toggleAll().catch(ex => console.error(ex));
+  },
+
+  /**
+   * Toggle (pause/play) all animations in the current target
+   * and update the UI the toggleAll button.
+   */
+  toggleAll: Task.async(function* () {
+    this.toggleAllButtonEl.classList.toggle("paused");
+    yield AnimationsController.toggleAll();
+  }),
+
+  onTimelinePlayClicked: function () {
+    this.playPauseTimeline().catch(ex => console.error(ex));
+  },
+
+  /**
+   * Depending on the state of the timeline either pause or play the animations
+   * displayed in it.
+   * If the animations are finished, this will play them from the start again.
+   * If the animations are playing, this will pause them.
+   * If the animations are paused, this will resume them.
+   *
+   * @return {Promise} Resolves when the playState is changed and the UI
+   * is refreshed
+   */
+  playPauseTimeline: function () {
+    return AnimationsController
+      .toggleCurrentAnimations(this.timelineData.isMoving)
+      .then(() => this.refreshAnimationsStateAndUI());
+  },
+
+  onTimelineRewindClicked: function () {
+    this.rewindTimeline().catch(ex => console.error(ex));
+  },
+
+  /**
+   * Reset the startTime of all current animations shown in the timeline and
+   * pause them.
+   *
+   * @return {Promise} Resolves when currentTime is set and the UI is refreshed
+   */
+  rewindTimeline: function () {
+    return AnimationsController
+      .setCurrentTimeAll(0, true)
+      .then(() => this.refreshAnimationsStateAndUI());
+  },
+
+  /**
+   * Set the playback rate of all current animations shown in the timeline to
+   * the value of this.rateSelectorEl.
+   */
+  onRateChanged: function (e, rate) {
+    AnimationsController.setPlaybackRateAll(rate)
+                        .then(() => this.refreshAnimationsStateAndUI())
+                        .catch(ex => console.error(ex));
+  },
+
+  onTabNavigated: function () {
+    this.toggleAllButtonEl.classList.remove("paused");
+  },
+
+  onTimelineDataChanged: function (e, data) {
+    this.timelineData = data;
+    let {isMoving, isUserDrag, time} = data;
+
+    this.playTimelineButtonEl.classList.toggle("paused", !isMoving);
+
+    let l10nPlayProperty = isMoving ? "timeline.resumedButtonTooltip" :
+                                      "timeline.pausedButtonTooltip";
+
+    this.playTimelineButtonEl.setAttribute("title",
+      L10N.getStr(l10nPlayProperty));
+
+    // If the timeline data changed as a result of the user dragging the
+    // scrubber, then pause all animations and set their currentTimes.
+    // (Note that we want server-side requests to be sequenced, so we only do
+    // this after the previous currentTime setting was done).
+    if (isUserDrag && !this.setCurrentTimeAllPromise) {
+      this.setCurrentTimeAllPromise =
+        AnimationsController.setCurrentTimeAll(time, true)
+                            .catch(error => console.error(error))
+                            .then(() => {
+                              this.setCurrentTimeAllPromise = null;
+                            });
+    }
+
+    this.displayTimelineCurrentTime();
+  },
+
+  displayTimelineCurrentTime: function () {
+    let {time} = this.timelineData;
+    this.timelineCurrentTimeEl.textContent = formatStopwatchTime(time);
+  },
+
+  /**
+   * Make sure all known animations have their states up to date (which is
+   * useful after the playState or currentTime has been changed and in case the
+   * animations aren't auto-refreshing), and then refresh the UI.
+   */
+  refreshAnimationsStateAndUI: Task.async(function* () {
+    for (let player of AnimationsController.animationPlayers) {
+      yield player.refreshState();
+    }
+    yield this.refreshAnimationsUI();
+  }),
+
+  /**
+   * Refresh the list of animations UI. This will empty the panel and re-render
+   * the various components again.
+   */
+  refreshAnimationsUI: Task.async(function* () {
+    // Empty the whole panel first.
+    this.togglePlayers(true);
+
+    // Re-render the timeline component.
+    this.animationsTimelineComponent.render(
+      AnimationsController.animationPlayers,
+      AnimationsController.documentCurrentTime);
+
+    // Re-render the rate selector component.
+    if (this.rateSelectorComponent) {
+      this.rateSelectorComponent.render(AnimationsController.animationPlayers);
+    }
+
+    // If there are no players to show, show the error message instead and
+    // return.
+    if (!AnimationsController.animationPlayers.length) {
+      this.togglePlayers(false);
+      this.emit(this.UI_UPDATED_EVENT);
+      return;
+    }
+
+    this.emit(this.UI_UPDATED_EVENT);
+  })
+};
+
+EventEmitter.decorate(AnimationsPanel);