text: /*
   * Copyright (c) 2015 - present Adobe Systems Incorporated. All rights reserved.
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the "Software"),
   * to deal in the Software without restriction, including without limitation
   * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   * and/or sell copies of the Software, and to permit persons to whom the
   * Software is furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
   * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
   * DEALINGS IN THE SOFTWARE.
   *
   */
  
  define(function (require, exports, module) {
      "use strict";
  
      var Menus               = brackets.getModule("command/Menus"),
          CommandManager      = brackets.getModule("command/CommandManager"),
          Commands            = brackets.getModule("command/Commands"),
          Strings             = brackets.getModule("strings"),
          PreferencesManager  = brackets.getModule("preferences/PreferencesManager"),
          ViewUtils           = brackets.getModule("utils/ViewUtils"),
          KeyBindingManager   = brackets.getModule("command/KeyBindingManager"),
          HealthLogger        = brackets.getModule("utils/HealthLogger"),
          WorkspaceManager    = brackets.getModule("view/WorkspaceManager");
  
      // Constants
      var PREFS_PURE_CODE           = "noDistractions",
          CMD_TOGGLE_PURE_CODE      = "view.togglePureCode",
          CMD_TOGGLE_PANELS         = "view.togglePanels",
          HEALTH_NO_DISTRACTION     = "noDistractionModeUsed",
          HEALTH_TOGGLE_PANELS      = "togglePanels";
  
      //key binding keys
      var togglePureCodeKey         = "Ctrl-Shift-2",
          togglePureCodeKeyMac      = "Cmd-Shift-2",
          togglePanelsKey           = "Ctrl-Shift-1",
          togglePanelsKeyMac        = "Cmd-Shift-1",
          togglePanelsKey_EN        = "Ctrl-Shift-`",
          togglePanelsKeyMac_EN     = "Cmd-Shift-`";
  
      //locals
      var _previouslyOpenPanelIDs = [],
          panelsToggled = false,
          layoutUpdated = false;
  
      /**
       * @private
       * Updates the command checked status based on the preference for noDestraction mode
       */
      function _updateCheckedState() {
          CommandManager.get(CMD_TOGGLE_PURE_CODE).setChecked(PreferencesManager.get(PREFS_PURE_CODE));
      }
  
      /**
       * @private
       * toggles noDisraction preference
       */
      function _togglePureCode() {
          PreferencesManager.set(PREFS_PURE_CODE, !PreferencesManager.get(PREFS_PURE_CODE));
          HealthLogger.setHealthDataLog(HEALTH_NO_DISTRACTION, true);
      }
  
      /**
       * hide all open panels
       */
      function _hidePanelsIfRequired() {
          var panelIDs = WorkspaceManager.getAllPanelIDs();
          _previouslyOpenPanelIDs = [];
          panelIDs.forEach(function (panelID) {
              var panel = WorkspaceManager.getPanelForID(panelID);
              if (panel && panel.isVisible()) {
                  panel.hide();
                  _previouslyOpenPanelIDs.push(panelID);
              }
          });
      }
  
      /**
       * show all open panels that was previously hidden by _hidePanelsIfRequired()
       */
      function _showPanelsIfRequired() {
          var panelIDs = _previouslyOpenPanelIDs;
          panelIDs.forEach(function (panelID) {
              var panel = WorkspaceManager.getPanelForID(panelID);
              if (panel) {
                  panel.show();
              }
          });
          _previouslyOpenPanelIDs = [];
      }
  
      function _updateLayout() {
          layoutUpdated = true;
          panelsToggled = false;
      }
  
      /**
       * We toggle panels in certain cases only :
       * 1. if a panel is shown, toggle can hide it, and successive toggle can show the panel and repeat.
       * 2. if a panel is hidden by toggle, and say the workspace changed making another panel visible by some operation;
       * we reset toggle states so that toggle would hide the panel already present in the workspace.
       * The already hidden panel should not be shown in the specific case for better UX.
       */
      function _togglePanels() {
          var togglePanelCount;
          panelsToggled = !panelsToggled;
          if (panelsToggled) {
              _hidePanelsIfRequired();
              layoutUpdated = false;
              panelsToggled = true;
          } else if (!layoutUpdated) {
              _showPanelsIfRequired();
          }
  
          //log health data
          togglePanelCount = HealthLogger.getHealthDataLog(HEALTH_TOGGLE_PANELS);
          togglePanelCount = (typeof togglePanelCount === 'number') ? togglePanelCount + 1 : 0;
          HealthLogger.setHealthDataLog(HEALTH_TOGGLE_PANELS, togglePanelCount);
      }
  
      PreferencesManager.definePreference(PREFS_PURE_CODE, "boolean", false, {
          description: Strings.DESCRIPTION_PURE_CODING_SURFACE
      });
  
      PreferencesManager.on("change", PREFS_PURE_CODE, function () {
          if (PreferencesManager.get(PREFS_PURE_CODE)) {
              ViewUtils.hideMainToolBar();
              CommandManager.execute(Commands.HIDE_SIDEBAR);
              _hidePanelsIfRequired();
          } else {
              ViewUtils.showMainToolBar();
              CommandManager.execute(Commands.SHOW_SIDEBAR);
              _showPanelsIfRequired();
          }
          _updateCheckedState();
      });
  
      WorkspaceManager.on(WorkspaceManager.EVENT_WORKSPACE_PANEL_SHOWN, _updateLayout);
  
      /**
       * Register the Commands , add the Menu Items and key bindings
       */
      function initializeCommands() {
          CommandManager.register(Strings.CMD_TOGGLE_PURE_CODE, CMD_TOGGLE_PURE_CODE, _togglePureCode);
          CommandManager.register(Strings.CMD_TOGGLE_PANELS, CMD_TOGGLE_PANELS, _togglePanels);
  
          Menus.getMenu(Menus.AppMenuBar.VIEW_MENU).addMenuItem(CMD_TOGGLE_PANELS, "", Menus.AFTER, Commands.VIEW_HIDE_SIDEBAR);
          Menus.getMenu(Menus.AppMenuBar.VIEW_MENU).addMenuItem(CMD_TOGGLE_PURE_CODE, "", Menus.AFTER, CMD_TOGGLE_PANELS);
  
          KeyBindingManager.addBinding(CMD_TOGGLE_PURE_CODE, [ {key: togglePureCodeKey}, {key: togglePureCodeKeyMac, platform: "mac"} ]);
  
          //default toggle panel shortcut was ctrl+shift+` as it is present in one vertical line in the keyboard. However, we later learnt
          //from IQE team than non-English keyboards does not have the ` char. So added one more shortcut ctrl+shift+1 which will be preferred
          KeyBindingManager.addBinding(CMD_TOGGLE_PANELS, [ {key: togglePanelsKey}, {key: togglePanelsKeyMac, platform: "mac"} ]);
          KeyBindingManager.addBinding(CMD_TOGGLE_PANELS, [ {key: togglePanelsKey_EN}, {key: togglePanelsKeyMac_EN, platform: "mac"} ]);
      }
  
      initializeCommands();
  
  });
  