third_party/polymer/components-chromium/core-tooltip/core-tooltip-extracted.js

   1
   2
   3   Polymer('core-tooltip', {
   4
   5     /**
   6      * A simple string label for the tooltip to display. To display a rich
   7      * that includes HTML, use the `tip` attribute on the content.
   8      *
   9      * @attribute label
  10      * @type string
  11      * @default null
  12      */
  13     label: null,
  14
  15     /**
  16      * If true, the tooltip an arrow pointing towards the content.
  17      *
  18      * @attribute noarrow
  19      * @type boolean
  20      * @default false
  21      */
  22     noarrow: false,
  23
  24     /**
  25      * If true, the tooltip displays by default.
  26      *
  27      * @attribute show
  28      * @type boolean
  29      * @default false
  30      */
  31     show: false,
  32
  33     /**
  34      * Positions the tooltip to the top, right, bottom, left of its content.
  35      *
  36      * @attribute position
  37      * @type string
  38      * @default 'bottom'
  39      */
  40     position: 'bottom',
  41
  42     attached: function() {
  43       this.setPosition();
  44     },
  45
  46     labelChanged: function(oldVal, newVal) {
  47       // Run if we're not after attached().
  48       if (oldVal) {
  49         this.setPosition();
  50       }
  51     },
  52
  53     setPosition: function() {
  54       var controlWidth = this.clientWidth;
  55       var controlHeight = this.clientHeight;
  56
  57       var styles = getComputedStyle(this.$.tooltip);
  58       var toolTipWidth = parseFloat(styles.width);
  59       var toolTipHeight = parseFloat(styles.height);
  60
  61       switch (this.position) {
  62         case 'top':
  63         case 'bottom':
  64           this.$.tooltip.style.left = (controlWidth - toolTipWidth) / 2 + 'px';
  65           break;
  66         case 'left':
  67         case 'right':
  68           this.$.tooltip.style.top = (controlHeight - toolTipHeight) / 2 + 'px';
  69           break;
  70       }
  71     }
  72   });
  73