text: /**
   * @license
   * Visual Blocks Editor
   *
   * Copyright 2013 Google Inc.
   * https://developers.google.com/blockly/
   *
   * 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.
   */
  
  /**
   * @fileoverview Inject Blockly's CSS synchronously.
   * @author fraser@google.com (Neil Fraser)
   */
  'use strict';
  
  goog.provide('Blockly.Css');
  
  
  /**
   * List of cursors.
   * @enum {string}
   */
  Blockly.Css.Cursor = {
    OPEN: 'handopen',
    CLOSED: 'handclosed',
    DELETE: 'handdelete'
  };
  
  /**
   * Current cursor (cached value).
   * @type {string}
   * @private
   */
  Blockly.Css.currentCursor_ = '';
  
  /**
   * Large stylesheet added by Blockly.Css.inject.
   * @type {Element}
   * @private
   */
  Blockly.Css.styleSheet_ = null;
  
  /**
   * Path to media directory, with any trailing slash removed.
   * @type {string}
   * @private
   */
  Blockly.Css.mediaPath_ = '';
  
  /**
   * Inject the CSS into the DOM.  This is preferable over using a regular CSS
   * file since:
   * a) It loads synchronously and doesn't force a redraw later.
   * b) It speeds up loading by not blocking on a separate HTTP transfer.
   * c) The CSS content may be made dynamic depending on init options.
   * @param {boolean} hasCss If false, don't inject CSS
   *     (providing CSS becomes the document's responsibility).
   * @param {string} pathToMedia Path from page to the Blockly media directory.
   */
  Blockly.Css.inject = function(hasCss, pathToMedia) {
    // Only inject the CSS once.
    if (Blockly.Css.styleSheet_) {
      return;
    }
    // Placeholder for cursor rule.  Must be first rule (index 0).
    var text = '.blocklyDraggable {}\n';
    if (hasCss) {
      text += Blockly.Css.CONTENT.join('\n');
      if (Blockly.FieldDate) {
        text += Blockly.FieldDate.CSS.join('\n');
      }
    }
    // Strip off any trailing slash (either Unix or Windows).
    Blockly.Css.mediaPath_ = pathToMedia.replace(/[\\\/]$/, '');
    text = text.replace(/<<<PATH>>>/g, Blockly.Css.mediaPath_);
    // Inject CSS tag.
    var cssNode = document.createElement('style');
    document.head.appendChild(cssNode);
    var cssTextNode = document.createTextNode(text);
    cssNode.appendChild(cssTextNode);
    Blockly.Css.styleSheet_ = cssNode.sheet;
    Blockly.Css.setCursor(Blockly.Css.Cursor.OPEN);
  };
  
  /**
   * Set the cursor to be displayed when over something draggable.
   * @param {Blockly.Css.Cursor} cursor Enum.
   */
  Blockly.Css.setCursor = function(cursor) {
    if (Blockly.Css.currentCursor_ == cursor) {
      return;
    }
    Blockly.Css.currentCursor_ = cursor;
    var url = 'url(' + Blockly.Css.mediaPath_ + '/' + cursor + '.cur), auto';
    // There are potentially hundreds of draggable objects.  Changing their style
    // properties individually is too slow, so change the CSS rule instead.
    var rule = '.blocklyDraggable {\n  cursor: ' + url + ';\n}\n';
    Blockly.Css.styleSheet_.deleteRule(0);
    Blockly.Css.styleSheet_.insertRule(rule, 0);
    // There is probably only one toolbox, so just change its style property.
    var toolboxen = document.getElementsByClassName('blocklyToolboxDiv');
    for (var i = 0, toolbox; toolbox = toolboxen[i]; i++) {
      if (cursor == Blockly.Css.Cursor.DELETE) {
        toolbox.style.cursor = url;
      } else {
        toolbox.style.cursor = '';
      }
    }
    // Set cursor on the whole document, so that rapid movements
    // don't result in cursor changing to an arrow momentarily.
    var html = document.body.parentNode;
    if (cursor == Blockly.Css.Cursor.OPEN) {
      html.style.cursor = '';
    } else {
      html.style.cursor = url;
    }
  };
  
  /**
   * Array making up the CSS content for Blockly.
   */
  Blockly.Css.CONTENT = [
    '.blocklySvg {',
      'background-color: #fff;',
      'outline: none;',
      'overflow: hidden;',  /* IE overflows by default. */
      'display: block;', 
    '}',
  
    '.blocklyWidgetDiv {',
      'display: none;',
      'position: absolute;',
      'z-index: 99999;', /* big value for bootstrap3 compatibility */
    '}',
  
    '.injectionDiv {',
      'height: 100%;',
      'position: relative;',
    '}',
  
    '.blocklyNonSelectable {',
      'user-select: none;',
      '-moz-user-select: none;',
      '-webkit-user-select: none;',
      '-ms-user-select: none;',
    '}',
  
    '.blocklyTooltipDiv {',
      'background-color: #ffffc7;',
      'border: 1px solid #ddc;',
      'box-shadow: 4px 4px 20px 1px rgba(0,0,0,.15);',
      'color: #000;',
      'display: none;',
      'font-family: sans-serif;',
      'font-size: 9pt;',
      'opacity: 0.9;',
      'padding: 2px;',
      'position: absolute;',
      'z-index: 100000;', /* big value for bootstrap3 compatibility */
    '}',
  
    '.blocklyResizeSE {',
      'cursor: se-resize;',
      'fill: #aaa;',
    '}',
  
    '.blocklyResizeSW {',
      'cursor: sw-resize;',
      'fill: #aaa;',
    '}',
  
    '.blocklyResizeLine {',
      'stroke: #888;',
      'stroke-width: 1;',
    '}',
  
    '.blocklyHighlightedConnectionPath {',
      'fill: none;',
      'stroke: #fc3;',
      'stroke-width: 4px;',
    '}',
  
    '.blocklyPathLight {',
      'fill: none;',
      'stroke-linecap: round;',
      'stroke-width: 1;',
    '}',
  
    '.blocklySelected>.blocklyPath {',
      'stroke: #fc3;',
      'stroke-width: 3px;',
    '}',
  
    '.blocklySelected>.blocklyPathLight {',
      'display: none;',
    '}',
  
    '.blocklyDragging>.blocklyPath,',
    '.blocklyDragging>.blocklyPathLight {',
      'fill-opacity: .8;',
      'stroke-opacity: .8;',
    '}',
  
    '.blocklyDragging>.blocklyPathDark {',
      'display: none;',
    '}',
  
    '.blocklyDisabled>.blocklyPath {',
      'fill-opacity: .5;',
      'stroke-opacity: .5;',
    '}',
  
    '.blocklyDisabled>.blocklyPathLight,',
    '.blocklyDisabled>.blocklyPathDark {',
      'display: none;',
    '}',
  
    '.blocklyText {',
      'cursor: default;',
      'fill: #fff;',
      'font-family: sans-serif;',
      'font-size: 11pt;',
    '}',
  
    '.blocklyNonEditableText>text {',
      'pointer-events: none;',
    '}',
  
    '.blocklyNonEditableText>rect,',
    '.blocklyEditableText>rect {',
      'fill: #fff;',
      'fill-opacity: .6;',
    '}',
  
    '.blocklyNonEditableText>text,',
    '.blocklyEditableText>text {',
      'fill: #000;',
    '}',
  
    '.blocklyEditableText:hover>rect {',
      'stroke: #fff;',
      'stroke-width: 2;',
    '}',
  
    '.blocklyBubbleText {',
      'fill: #000;',
    '}',
  
    '.blocklyFlyoutButton {',
      'fill: #888;',
      'cursor: default',
    '}',
  
    '.blocklyFlyoutButton:hover {',
      'fill: #ccc;',
    '}',
  
    /*
      Don't allow users to select text.  It gets annoying when trying to
      drag a block and selected text moves instead.
    */
    '.blocklySvg text {',
      'user-select: none;',
      '-moz-user-select: none;',
      '-webkit-user-select: none;',
      'cursor: inherit;',
    '}',
  
    '.blocklyHidden {',
      'display: none;',
    '}',
  
    '.blocklyFieldDropdown:not(.blocklyHidden) {',
      'display: block;',
    '}',
  
    '.blocklyIconGroup {',
      'cursor: default;',
    '}',
  
    '.blocklyIconGroup:not(:hover),',
    '.blocklyIconGroupReadonly {',
      'opacity: .6;',
    '}',
  
    '.blocklyIconShape {',
      'fill: #00f;',
      'stroke: #fff;',
      'stroke-width: 1px;',
    '}',
  
    '.blocklyIconSymbol {',
      'fill: #fff;',
    '}',
  
    '.blocklyMinimalBody {',
      'margin: 0;',
      'padding: 0;',
    '}',
  
    '.blocklyCommentTextarea {',
      'background-color: #ffc;',
      'border: 0;',
      'margin: 0;',
      'padding: 2px;',
      'resize: none;',
    '}',
  
    '.blocklyHtmlInput {',
      'border: none;',
      'border-radius: 4px;',
      'font-family: sans-serif;',
      'height: 100%;',
      'margin: 0;',
      'outline: none;',
      'padding: 0 1px;',
      'width: 100%',
    '}',
  
    '.blocklyMainBackground {',
      'stroke-width: 1;',
      'stroke: #c6c6c6;',  /* Equates to #ddd due to border being off-pixel. */
    '}',
  
    '.blocklyMutatorBackground {',
      'fill: #fff;',
      'stroke: #ddd;',
      'stroke-width: 1;',
    '}',
  
    '.blocklyFlyoutBackground {',
      'fill: #ddd;',
      'fill-opacity: .8;',
    '}',
  
    '.blocklyScrollbarBackground {',
      'opacity: 0;',
    '}',
  
    '.blocklyScrollbarHandle {',
      'fill: #ccc;',
    '}',
  
    '.blocklyScrollbarBackground:hover+.blocklyScrollbarHandle,',
    '.blocklyScrollbarHandle:hover {',
      'fill: #bbb;',
    '}',
  
    '.blocklyZoom>image {',
      'opacity: .4;',
    '}',
  
    '.blocklyZoom>image:hover {',
      'opacity: .6;',
    '}',
  
    '.blocklyZoom>image:active {',
      'opacity: .8;',
    '}',
  
    /* Darken flyout scrollbars due to being on a grey background. */
    /* By contrast, workspace scrollbars are on a white background. */
    '.blocklyFlyout .blocklyScrollbarHandle {',
      'fill: #bbb;',
    '}',
  
    '.blocklyFlyout .blocklyScrollbarBackground:hover+.blocklyScrollbarHandle,',
    '.blocklyFlyout .blocklyScrollbarHandle:hover {',
      'fill: #aaa;',
    '}',
  
    '.blocklyInvalidInput {',
      'background: #faa;',
    '}',
  
    '.blocklyAngleCircle {',
      'stroke: #444;',
      'stroke-width: 1;',
      'fill: #ddd;',
      'fill-opacity: .8;',
    '}',
  
    '.blocklyAngleMarks {',
      'stroke: #444;',
      'stroke-width: 1;',
    '}',
  
    '.blocklyAngleGauge {',
      'fill: #f88;',
      'fill-opacity: .8;',
    '}',
  
    '.blocklyAngleLine {',
      'stroke: #f00;',
      'stroke-width: 2;',
      'stroke-linecap: round;',
    '}',
  
    '.blocklyContextMenu {',
      'border-radius: 4px;',
    '}',
  
    '.blocklyDropdownMenu {',
      'padding: 0 !important;',
    '}',
  
    /* Override the default Closure URL. */
    '.blocklyWidgetDiv .goog-option-selected .goog-menuitem-checkbox,',
    '.blocklyWidgetDiv .goog-option-selected .goog-menuitem-icon {',
      'background: url(<<<PATH>>>/sprites.png) no-repeat -48px -16px !important;',
    '}',
  
    /* Category tree in Toolbox. */
    '.blocklyToolboxDiv {',
      'background-color: #ddd;',
      'overflow-x: visible;',
      'overflow-y: auto;',
      'position: absolute;',
    '}',
  
    '.blocklyTreeRoot {',
      'padding: 4px 0;',
    '}',
  
    '.blocklyTreeRoot:focus {',
      'outline: none;',
    '}',
  
    '.blocklyTreeRow {',
      'height: 22px;',
      'line-height: 22px;',
      'margin-bottom: 3px;',
      'padding-right: 8px;',
      'white-space: nowrap;',
    '}',
  
    '.blocklyHorizontalTree {',
      'float: left;',
      'margin: 1px 5px 8px 0;',
    '}',
  
    '.blocklyHorizontalTreeRtl {',
      'float: right;',
      'margin: 1px 0 8px 5px;',
    '}',
  
    '.blocklyToolboxDiv[dir="RTL"] .blocklyTreeRow {',
      'margin-left: 8px;',
    '}',
  
    '.blocklyTreeRow:not(.blocklyTreeSelected):hover {',
      'background-color: #e4e4e4;',
    '}',
  
    '.blocklyTreeSeparator {',
      'border-bottom: solid #e5e5e5 1px;',
      'height: 0;',
      'margin: 5px 0;',
    '}',
  
    '.blocklyTreeSeparatorHorizontal {',
      'border-right: solid #e5e5e5 1px;',
      'width: 0;',
      'padding: 5px 0;',
      'margin: 0 5px;',
    '}',
  
  
    '.blocklyTreeIcon {',
      'background-image: url(<<<PATH>>>/sprites.png);',
      'height: 16px;',
      'vertical-align: middle;',
      'width: 16px;',
    '}',
  
    '.blocklyTreeIconClosedLtr {',
      'background-position: -32px -1px;',
    '}',
  
    '.blocklyTreeIconClosedRtl {',
      'background-position: 0px -1px;',
    '}',
  
    '.blocklyTreeIconOpen {',
      'background-position: -16px -1px;',
    '}',
  
    '.blocklyTreeSelected>.blocklyTreeIconClosedLtr {',
      'background-position: -32px -17px;',
    '}',
  
    '.blocklyTreeSelected>.blocklyTreeIconClosedRtl {',
      'background-position: 0px -17px;',
    '}',
  
    '.blocklyTreeSelected>.blocklyTreeIconOpen {',
      'background-position: -16px -17px;',
    '}',
  
    '.blocklyTreeIconNone,',
    '.blocklyTreeSelected>.blocklyTreeIconNone {',
      'background-position: -48px -1px;',
    '}',
  
    '.blocklyTreeLabel {',
      'cursor: default;',
      'font-family: sans-serif;',
      'font-size: 16px;',
      'padding: 0 3px;',
      'vertical-align: middle;',
    '}',
  
    '.blocklyTreeSelected .blocklyTreeLabel {',
      'color: #fff;',
    '}',
  
    /* Copied from: goog/css/colorpicker-simplegrid.css */
    /*
     * Copyright 2007 The Closure Library Authors. All Rights Reserved.
     *
     * Use of this source code is governed by the Apache License, Version 2.0.
     * See the COPYING file for details.
     */
  
    /* Author: pupius@google.com (Daniel Pupius) */
  
    /*
      Styles to make the colorpicker look like the old gmail color picker
      NOTE: without CSS scoping this will override styles defined in palette.css
    */
    '.blocklyWidgetDiv .goog-palette {',
      'outline: none;',
      'cursor: default;',
    '}',
  
    '.blocklyWidgetDiv .goog-palette-table {',
      'border: 1px solid #666;',
      'border-collapse: collapse;',
    '}',
  
    '.blocklyWidgetDiv .goog-palette-cell {',
      'height: 13px;',
      'width: 15px;',
      'margin: 0;',
      'border: 0;',
      'text-align: center;',
      'vertical-align: middle;',
      'border-right: 1px solid #666;',
      'font-size: 1px;',
    '}',
  
    '.blocklyWidgetDiv .goog-palette-colorswatch {',
      'position: relative;',
      'height: 13px;',
      'width: 15px;',
      'border: 1px solid #666;',
    '}',
  
    '.blocklyWidgetDiv .goog-palette-cell-hover .goog-palette-colorswatch {',
      'border: 1px solid #FFF;',
    '}',
  
    '.blocklyWidgetDiv .goog-palette-cell-selected .goog-palette-colorswatch {',
      'border: 1px solid #000;',
      'color: #fff;',
    '}',
  
    /* Copied from: goog/css/menu.css */
    /*
     * Copyright 2009 The Closure Library Authors. All Rights Reserved.
     *
     * Use of this source code is governed by the Apache License, Version 2.0.
     * See the COPYING file for details.
     */
  
    /**
     * Standard styling for menus created by goog.ui.MenuRenderer.
     *
     * @author attila@google.com (Attila Bodis)
     */
  
    '.blocklyWidgetDiv .goog-menu {',
      'background: #fff;',
      'border-color: #ccc #666 #666 #ccc;',
      'border-style: solid;',
      'border-width: 1px;',
      'cursor: default;',
      'font: normal 13px Arial, sans-serif;',
      'margin: 0;',
      'outline: none;',
      'padding: 4px 0;',
      'position: absolute;',
      'overflow-y: auto;',
      'overflow-x: hidden;',
      'max-height: 100%;',
      'z-index: 20000;',  /* Arbitrary, but some apps depend on it... */
    '}',
  
    /* Copied from: goog/css/menuitem.css */
    /*
     * Copyright 2009 The Closure Library Authors. All Rights Reserved.
     *
     * Use of this source code is governed by the Apache License, Version 2.0.
     * See the COPYING file for details.
     */
  
    /**
     * Standard styling for menus created by goog.ui.MenuItemRenderer.
     *
     * @author attila@google.com (Attila Bodis)
     */
  
    /**
     * State: resting.
     *
     * NOTE(mleibman,chrishenry):
     * The RTL support in Closure is provided via two mechanisms -- "rtl" CSS
     * classes and BiDi flipping done by the CSS compiler.  Closure supports RTL
     * with or without the use of the CSS compiler.  In order for them not
     * to conflict with each other, the "rtl" CSS classes need to have the #noflip
     * annotation.  The non-rtl counterparts should ideally have them as well, but,
     * since .goog-menuitem existed without .goog-menuitem-rtl for so long before
     * being added, there is a risk of people having templates where they are not
     * rendering the .goog-menuitem-rtl class when in RTL and instead rely solely
     * on the BiDi flipping by the CSS compiler.  That's why we're not adding the
     * #noflip to .goog-menuitem.
     */
    '.blocklyWidgetDiv .goog-menuitem {',
      'color: #000;',
      'font: normal 13px Arial, sans-serif;',
      'list-style: none;',
      'margin: 0;',
       /* 28px on the left for icon or checkbox; 7em on the right for shortcut. */
      'padding: 4px 7em 4px 28px;',
      'white-space: nowrap;',
    '}',
  
    /* BiDi override for the resting state. */
    /* #noflip */
    '.blocklyWidgetDiv .goog-menuitem.goog-menuitem-rtl {',
       /* Flip left/right padding for BiDi. */
      'padding-left: 7em;',
      'padding-right: 28px;',
    '}',
  
    /* If a menu doesn't have checkable items or items with icons, remove padding. */
    '.blocklyWidgetDiv .goog-menu-nocheckbox .goog-menuitem,',
    '.blocklyWidgetDiv .goog-menu-noicon .goog-menuitem {',
      'padding-left: 12px;',
    '}',
  
    /*
     * If a menu doesn't have items with shortcuts, leave just enough room for
     * submenu arrows, if they are rendered.
     */
    '.blocklyWidgetDiv .goog-menu-noaccel .goog-menuitem {',
      'padding-right: 20px;',
    '}',
  
    '.blocklyWidgetDiv .goog-menuitem-content {',
      'color: #000;',
      'font: normal 13px Arial, sans-serif;',
    '}',
  
    /* State: disabled. */
    '.blocklyWidgetDiv .goog-menuitem-disabled .goog-menuitem-accel,',
    '.blocklyWidgetDiv .goog-menuitem-disabled .goog-menuitem-content {',
      'color: #ccc !important;',
    '}',
  
    '.blocklyWidgetDiv .goog-menuitem-disabled .goog-menuitem-icon {',
      'opacity: 0.3;',
      '-moz-opacity: 0.3;',
      'filter: alpha(opacity=30);',
    '}',
  
    /* State: hover. */
    '.blocklyWidgetDiv .goog-menuitem-highlight,',
    '.blocklyWidgetDiv .goog-menuitem-hover {',
      'background-color: #d6e9f8;',
       /* Use an explicit top and bottom border so that the selection is visible',
        * in high contrast mode. */
      'border-color: #d6e9f8;',
      'border-style: dotted;',
      'border-width: 1px 0;',
      'padding-bottom: 3px;',
      'padding-top: 3px;',
    '}',
  
    /* State: selected/checked. */
    '.blocklyWidgetDiv .goog-menuitem-checkbox,',
    '.blocklyWidgetDiv .goog-menuitem-icon {',
      'background-repeat: no-repeat;',
      'height: 16px;',
      'left: 6px;',
      'position: absolute;',
      'right: auto;',
      'vertical-align: middle;',
      'width: 16px;',
    '}',
  
    /* BiDi override for the selected/checked state. */
    /* #noflip */
    '.blocklyWidgetDiv .goog-menuitem-rtl .goog-menuitem-checkbox,',
    '.blocklyWidgetDiv .goog-menuitem-rtl .goog-menuitem-icon {',
       /* Flip left/right positioning. */
      'left: auto;',
      'right: 6px;',
    '}',
  
    '.blocklyWidgetDiv .goog-option-selected .goog-menuitem-checkbox,',
    '.blocklyWidgetDiv .goog-option-selected .goog-menuitem-icon {',
       /* Client apps may override the URL at which they serve the sprite. */
      'background: url(//ssl.gstatic.com/editor/editortoolbar.png) no-repeat -512px 0;',
    '}',
  
    /* Keyboard shortcut ("accelerator") style. */
    '.blocklyWidgetDiv .goog-menuitem-accel {',
      'color: #999;',
       /* Keyboard shortcuts are untranslated; always left-to-right. */
       /* #noflip */
      'direction: ltr;',
      'left: auto;',
      'padding: 0 6px;',
      'position: absolute;',
      'right: 0;',
      'text-align: right;',
    '}',
  
    /* BiDi override for shortcut style. */
    /* #noflip */
    '.blocklyWidgetDiv .goog-menuitem-rtl .goog-menuitem-accel {',
       /* Flip left/right positioning and text alignment. */
      'left: 0;',
      'right: auto;',
      'text-align: left;',
    '}',
  
    /* Mnemonic styles. */
    '.blocklyWidgetDiv .goog-menuitem-mnemonic-hint {',
      'text-decoration: underline;',
    '}',
  
    '.blocklyWidgetDiv .goog-menuitem-mnemonic-separator {',
      'color: #999;',
      'font-size: 12px;',
      'padding-left: 4px;',
    '}',
  
    /* Copied from: goog/css/menuseparator.css */
    /*
     * Copyright 2009 The Closure Library Authors. All Rights Reserved.
     *
     * Use of this source code is governed by the Apache License, Version 2.0.
     * See the COPYING file for details.
     */
  
    /**
     * Standard styling for menus created by goog.ui.MenuSeparatorRenderer.
     *
     * @author attila@google.com (Attila Bodis)
     */
  
    '.blocklyWidgetDiv .goog-menuseparator {',
      'border-top: 1px solid #ccc;',
      'margin: 4px 0;',
      'padding: 0;',
    '}',
  
    ''
  ];
  