Monday, September 30, 2013

PerformancePoint Multi-Select Tree Filter Zoom Issue in Internet Explorer

Recently I needed to create a Multi-Select Tree Filter for one of my PerformancePoint dashboards. I’ve created plenty of List Filters against Named Sets, Member Selections and MDX Queries in the past, and I’ve even created my own custom textbox PerformancePoint filters, but until recently, I hadn’t had the need for a Multi-Select Tree Filter. For a new dashboard that I was creating, I basically needed a simple checkbox list to use as a PerformancePoint dashboard filter and the Multi-Select Tree Filter fit the bill perfectly. It was easy to create and it seemed to work well too, until I attempted a live demo of the dashboard to an internal group.

With the dashboard projected onto a wall and zoomed in using Internet Explorer’s zoom so that everyone could clearly view the dashboard, I expanded the filter, only to get something similar to the following:
A complete fail.

In the moment, I neglected to realize that it was IE's zoom causing the problem, although I quickly discovered that back at my desk. At 100% it displayed perfectly. As IE's zoom increased or decreased away from 100%, the list moved out of view either to the upper left or to the lower right, eventually, just showing the word "false". Setting a zoom level in Chrome worked fine (of course), which did help me in finding a solution rather quickly.
Using Chrome's Developer tools I found that one of the enclosing DIV elements that displays the dropdown was using the following filter:
.pps-tree-layer1 {
    filter: progid:DXImageTransform.Microsoft.Shadow(color=#333333,direction=130,strength=3)
Switching over to IE's Developer tools and disabling that filter, enabled the Multi-Select Tree Filter to display properly when zooming. A quick Google search for how to remove the filter via CSS yielded a blog post by Brian Johnson on How to Disable a CSS Filter in Internet Explorer. I applied that to the correct element as follows:
.pps-tree-layer1 {
    /* For IE 8+ */
    -ms-filter: "progid:DXImageTransform.Microsoft.Shadow(enabled = false)"!important;
    /* For IE 5.5 - 7 */
    filter: progid:DXImageTransform.Microsoft.Shadow(enabled = false)!important;

and viola...

Zoomed and displaying correctly!

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