DevTools: introduce spritesheet assembler.

third_party/WebKit/Source/devtools/front_end/ui/Icon.js

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @constructor
  * @extends {HTMLSpanElement}
  */
 UI.Icon = class extends HTMLSpanElement {
+  /**
+   * @param {!UI.Icon.SpriteSheet} spriteSheet
+   */
+  static setSpriteSheet(spriteSheet) {
+    UI.Icon._spriteSheet = spriteSheet;
+  }
+
   constructor() {
     super();
     throw new Error('icon must be created via factory method.');
   }
 
   /**
    * @param {string=} iconType
    * @param {string=} className
    * @return {!UI.Icon}
    */
   static create(iconType, className) {
     if (!UI.Icon._constructor)
       UI.Icon._constructor = UI.registerCustomElement('span', 'ui-icon', UI.Icon.prototype);
 
     var icon = /** @type {!UI.Icon} */ (new UI.Icon._constructor());
+
     if (className)
       icon.className = className;
     if (iconType)
       icon.setIconType(iconType);
     return icon;
   }
 
   /**
    * @override
    */
   createdCallback() {
     /** @type {?UI.Icon.Descriptor} */
     this._descriptor = null;
     /** @type {string} */
     this._iconType = '';
+    this.style.setProperty('--spritesheet-size', UI.Icon._spriteSheet.size);
   }
 
   /**
    * @param {string} iconType
    */
   setIconType(iconType) {
     if (this._descriptor) {
-      this.style.removeProperty('-webkit-mask-position');
-      this.style.removeProperty('background-position');
+      this.style.removeProperty('--spritesheet-position');
       this.style.removeProperty('width');
       this.style.removeProperty('height');
       this._toggleClasses(false);
       this._iconType = '';
       this._descriptor = null;
     }
-    var descriptor = UI.Icon.Descriptors[iconType] || null;
+    var descriptor = UI.Icon._spriteSheet.descriptors[iconType] || null;
     if (descriptor) {
       this._iconType = iconType;
       this._descriptor = descriptor;
-      this.style.setProperty('-webkit-mask-position', this._propertyValue());
-      this.style.setProperty('background-position', this._propertyValue());
+      this.style.setProperty('--spritesheet-position', this._propertyValue());
       this.style.setProperty('width', this._descriptor.width + 'px');
       this.style.setProperty('height', this._descriptor.height + 'px');
       this._toggleClasses(true);
     } else if (iconType) {
       throw new Error(`ERROR: failed to find icon descriptor for type: ${iconType}`);
     }
   }
 
   /**
    * @param {boolean} value
    */
   _toggleClasses(value) {
-    this.classList.toggle('spritesheet-' + this._descriptor.spritesheet, value);
     this.classList.toggle(this._iconType, value);
     this.classList.toggle('icon-mask', value && !!this._descriptor.isMask);
   }
 
   /**
    * @return {string}
    */
   _propertyValue() {
     return `${this._descriptor.x}px ${this._descriptor.y}px`;
   }
 };
 
-/** @typedef {{x: number, y: number, width: number, height: number, spritesheet: string, isMask: (boolean|undefined)}} */
+/** @typedef {{x: number, y: number, width: number, height: number, isMask: (boolean|undefined)}} */
 UI.Icon.Descriptor;
 
-/** @enum {!UI.Icon.Descriptor} */
-UI.Icon.Descriptors = {
-  'smallicon-error': {x: -20, y: 0, width: 10, height: 10, spritesheet: 'smallicons'},
-  'smallicon-warning': {x: -60, y: 0, width: 10, height: 10, spritesheet: 'smallicons'},
-  'smallicon-info': {x: -80, y: 0, width: 10, height: 10, spritesheet: 'smallicons'},
-  'smallicon-device': {x: -100, y: 0, width: 10, height: 10, spritesheet: 'smallicons'},
-  'smallicon-red-ball': {x: -120, y: 0, width: 10, height: 10, spritesheet: 'smallicons'},
-  'smallicon-green-ball': {x: -140, y: 0, width: 10, height: 10, spritesheet: 'smallicons'},
-  'smallicon-orange-ball': {x: -160, y: 0, width: 10, height: 10, spritesheet: 'smallicons'},
-  'smallicon-thick-right-arrow': {x: -180, y: 0, width: 10, height: 10, spritesheet: 'smallicons'},
-  'smallicon-thick-left-arrow': {x: -180, y: -20, width: 10, height: 10, spritesheet: 'smallicons'},
-  'smallicon-user-command': {x: 0, y: -19, width: 10, height: 10, spritesheet: 'smallicons'},
-  'smallicon-text-prompt': {x: -20, y: -20, width: 10, height: 10, spritesheet: 'smallicons'},
-  'smallicon-command-result': {x: -40, y: -19, width: 10, height: 10, spritesheet: 'smallicons'},
-  'smallicon-shadow': {x: -60, y: -20, width: 10, height: 10, spritesheet: 'smallicons', isMask: true},
-  'smallicon-bezier': {x: -80, y: -20, width: 10, height: 10, spritesheet: 'smallicons', isMask: true},
-  'smallicon-dropdown-arrow': {x: -18, y: -96, width: 12, height: 12, spritesheet: 'largeicons', isMask: true},
-  'smallicon-triangle-right': {x: -4, y: -98, width: 10, height: 8, spritesheet: 'largeicons', isMask: true},
-  'smallicon-triangle-down': {x: -20, y: -98, width: 10, height: 8, spritesheet: 'largeicons', isMask: true},
-  'smallicon-triangle-up': {x: -4, y: -111, width: 10, height: 8, spritesheet: 'largeicons', isMask: true},
-  'smallicon-arrow-in-circle': {x: -10, y: -127, width: 11, height: 11, spritesheet: 'largeicons', isMask: true},
-  'smallicon-cross': {x: -177, y: -98, width: 9, height: 9, spritesheet: 'largeicons'},
-  'smallicon-red-cross-hover': {x: -96, y: -96, width: 14, height: 14, spritesheet: 'largeicons'},
-  'smallicon-red-cross-active': {x: -111, y: -96, width: 14, height: 14, spritesheet: 'largeicons'},
-  'smallicon-gray-cross-hover': {x: -143, y: -96, width: 13, height: 13, spritesheet: 'largeicons'},
-  'smallicon-gray-cross-active': {x: -160, y: -96, width: 13, height: 13, spritesheet: 'largeicons'},
-
-  'smallicon-inline-breakpoint': {x: -140, y: -20, width: 10, height: 10, spritesheet: 'smallicons'},
-  'smallicon-inline-breakpoint-conditional': {x: -160, y: -20, width: 10, height: 10, spritesheet: 'smallicons'},
-  'smallicon-file': {x: -64, y: -24, width: 12, height: 14, spritesheet: 'largeicons'},
-  'smallicon-file-sync': {x: -76, y: -24, width: 12, height: 14, spritesheet: 'largeicons'},
-  'smallicon-search': {x: -234, y: -30, width: 12, height: 12, spritesheet: 'largeicons'},
-  'smallicon-clear-input': {x: -143, y: -96, width: 13, height: 13, spritesheet: 'largeicons'},
-  'smallicon-checkmark': {x: -128, y: -109, width: 10, height: 10, spritesheet: 'largeicons'},
-
-  'largeicon-longclick-triangle': {x: -290, y: -46, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-menu': {x: -192, y: -24, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-delete': {x: -128, y: -0, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-node-search': {x: -320, y: -120, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-add': {x: -224, y: -120, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-clear': {x: -64, y: 0, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-rotate-screen': {x: -192, y: -144, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-phone': {x: -320, y: -96, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-block': {x: -32, y: -144, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-layout-editor': {x: 0, y: -144, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-foreground-color': {x: -128, y: -144, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-background-color': {x: -96, y: -144, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-text-shadow': {x: -192, y: -48, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-box-shadow': {x: -160, y: -48, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-pause-animation': {x: -320, y: 0, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-replay-animation': {x: -320, y: -24, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-play-animation': {x: -320, y: -48, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-eyedropper': {x: -288, y: -120, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-copy': {x: -291, y: -143, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-checkmark': {x: -260, y: -71, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-rotate': {x: -160, y: -120, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-center': {x: -128, y: -120, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-pan': {x: -98, y: -120, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-waterfall': {x: -128, y: -48, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-filter': {x: -32, y: -48, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-trash-bin': {x: -128, y: -24, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-pretty-print': {x: -256, y: -24, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-deactivate-breakpoints': {x: 0, y: -24, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-activate-breakpoints': {x: -32, y: 0, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-resume': {x: 0, y: -72, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-pause': {x: -32, y: -72, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-pause-on-exceptions': {x: -256, y: 0, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-play-back': {x: -96, y: -48, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-play': {x: -64, y: -48, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-step-over': {x: -128, y: -72, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-step-out': {x: -96, y: -72, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-step-in': {x: -64, y: -72, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-camera': {x: -96, y: -24, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-stop-recording': {x: -288, y: -24, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-start-recording': {x: -288, y: 0, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-large-list': {x: -224, y: 0, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-visibility': {x: -96, y: 0, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-refresh': {x: 0, y: 0, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-dock-to-right': {x: -256, y: -48, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-dock-to-left': {x: -224, y: -48, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-dock-to-bottom': {x: -32, y: -24, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-undock': {x: 0, y: -48, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-settings-gear': {x: -288, y: -72, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-
-  'largeicon-show-left-sidebar': {x: -160, y: -72, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-hide-left-sidebar': {x: -192, y: -72, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-show-right-sidebar': {x: -192, y: -96, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-hide-right-sidebar': {x: -192, y: -120, width: 28, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-show-top-sidebar': {
-    x: -288,
-    y: -96,
-    width: 28,
-    height: 24,
-    spritesheet: 'largeicons',
-    isMask: true,
-  },
-  'largeicon-hide-top-sidebar': {
-    x: -256,
-    y: -96,
-    width: 28,
-    height: 24,
-    spritesheet: 'largeicons',
-    isMask: true,
-  },
-  'largeicon-show-bottom-sidebar': {
-    x: -224,
-    y: -144,
-    width: 28,
-    height: 24,
-    spritesheet: 'largeicons',
-    isMask: true,
-  },
-  'largeicon-hide-bottom-sidebar': {
-    x: -256,
-    y: -120,
-    width: 28,
-    height: 24,
-    spritesheet: 'largeicons',
-    isMask: true,
-  },
-  'largeicon-navigator-file': {x: -224, y: -72, width: 32, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-navigator-file-sync': {x: -160, y: -24, width: 32, height: 24, spritesheet: 'largeicons', isMask: true},
-  'badge-navigator-file-sync': {x: -320, y: -72, width: 32, height: 24, spritesheet: 'largeicons'},
-  'largeicon-navigator-folder': {x: -64, y: -120, width: 32, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-navigator-domain': {x: -160, y: -144, width: 32, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-navigator-frame': {x: -256, y: -144, width: 32, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-navigator-worker': {x: -320, y: -144, width: 32, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-navigator-snippet': {x: -224, y: -96, width: 32, height: 24, spritesheet: 'largeicons', isMask: true},
-  'largeicon-edit': {x: -160, y: -0, width: 28, height: 24, spritesheet: 'largeicons'},
-  'largeicon-chevron': {x: -68, y: -143, width: 24, height: 26, spritesheet: 'largeicons', isMask: true},
-
-  'mediumicon-manifest': {x: 0, y: -0, width: 16, height: 16, spritesheet: 'resourceicons', isMask: true},
-  'mediumicon-service-worker': {x: -20, y: -0, width: 16, height: 16, spritesheet: 'resourceicons', isMask: true},
-  'mediumicon-clear-storage': {x: -40, y: -0, width: 16, height: 16, spritesheet: 'resourceicons', isMask: true},
-  'mediumicon-database': {x: -60, y: -0, width: 16, height: 16, spritesheet: 'resourceicons', isMask: true},
-  'mediumicon-table': {x: -80, y: -0, width: 16, height: 16, spritesheet: 'resourceicons', isMask: true},
-  'mediumicon-cookie': {x: -120, y: -0, width: 16, height: 16, spritesheet: 'resourceicons', isMask: true},
-};
+/** @typedef {{size: string, descriptors: !Object<string, !UI.Icon.Descriptor>}} */
+UI.Icon.SpriteSheet;