ColorPicker preview fix

[dreddy]

the colorPicker got two little square to preview colors : one to preview the selected color and one, i suppose, to view the old one

But the old one preview change with the color selection.

here's a proposed fix

[dreddy]

patch for dojox/widget/ColorPicker.js

[dreddy]

line 490 : if (this.webSafe) {

this.safePreviewNode.style.backgroundColor = webSafeFromHex(hex);

}

by

if (this.webSafe && this.safePreviewNode.style.backgroundColor == "") {

this.safePreviewNode.style.backgroundColor = webSafeFromHex(hex);

}

[dante]

That second preview box is for "websafe" colors, which is a subset of the full color spectrum available in the picker. On line 15 in ColorPicker?.js you can see why the second box displays the same value as the websafe box. If you'd like to write a function to strip the color down to its nearest websafe hex value, please do so.

​http://en.wikipedia.org/wiki/Web_colors explains about 256-color limitations, and was the intent of that box.

If you don't want to see the box, set websafe to false.