[mapguide-internals] RE: RFC 81 is ready for review

[Buddy Hu]

Thank Trevor for your reply!

I don't think we have a bandwidth issue. These attributes have been requested when the features were selected, we just use these attributes. So this new feature won't add any request to the MapGuide Server. And this feature is available for the user to select 20 or 30 features most on the map. If the user select hundreds of features, it's not a typical use of this "Feature Inspector" panel.

About the secondary highlight, I have reply it in the last mail. I don't think we need it. Because we can't use the highlight to distinguish the feature.And I need to clarify the requirement again, maybe it's not so clear in the RFC:

Basically, this function is for SELECTING features in following case:
1.       In some case, it’s not possible or very difficult to distinguish some features VISUALLY on the map (they are either overlapped or too close with each other)
2.       So the user has to distinguish the features by reading their attributes
3.       After distinguished the features by checking the attributes, the user should be able to easily make the “wanted” feature(s) selected
 
Given the item 1 above, we can see, “highlight the feature in a different color” doesn’t really help us that much, because we already know it’s not possible to distinguish them VISUALLY on the Map (otherwise, we don’t need the inspector, we just zoom and pan to the right feature on the map and select it).

And with the current disign, we don't need "turn off, turn on, turn off, turn on, turn off, turn on, turn off, invert checked" (8 clicks) to get what we want.
We just read the attributes of feature in the tree, distinguish what we want by these attributes and click what we want.

Thanks,
-Buddy Hu


-----Original Message-----
From: mapguide-internals-bounces at lists.osgeo.org [mailto:mapguide-internals-bounces at lists.osgeo.org] On Behalf Of Trevor Wekel
Sent: Saturday, August 22, 2009 12:25 AM
To: MapGuide Internals Mail List
Subject: [mapguide-internals] RE: RFC 81 is ready for review

It seems to me that the layer/feature tree view would be a logical replacement for the Properties pane in both the Ajax and Fusion viewers.  If there are bandwidth issues with pulling all the feature properties at once, the following mechanism could be employed:

If only a single feature is selected, the entire tree would be initially expanded.  If multiple features are selected, only the layers with their feature counts would be visible.

As Dave suggested, a secondary selection color based on the selected item(s) in the tree view could also be a useful feature as it would reduce mouse clicks while the user tries to find the feature he is interested in.

With the secondary highlight "select, select, select, select, turn off check box, invert checked" (6 clicks) would select only the desired feature.  With the current implementation, "turn off, turn on, turn off, turn on, turn off, turn on, turn off, invert checked" (8 clicks) would select only the desired feature.  The secondary highlight will also take less time to draw than rendering the modified selection each time.

Thanks,
Trevor

-----Original Message-----
From: mapguide-internals-bounces at lists.osgeo.org [mailto:mapguide-internals-bounces at lists.osgeo.org] On Behalf Of Buddy Hu
Sent: August 20, 2009 11:42 PM
To: mapguide-internals at lists.osgeo.org
Subject: [mapguide-internals] RFC 81 is ready for review

Hi All,

The RFC 81- Add a new widget Feature Inspector is ok for review. http://trac.osgeo.org/mapguide/wiki/MapGuideRfc81
Any comments will be appreciated.

Thanks,
-Buddy Hu
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