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Table of Contents - Legend Widget for FlexViewer 2.x

RobertScheitlin__GISP

All,

Here is the next in my line of widgets for the FlexViewer 2.x.

The legend portion of this widget is the same code as my dynamic legend widget so,

IT IS FOR ARCGIS SERVER 10 OR GREATER ONLY

This is just a simple TOC Widget that includes my dynamic legend component.
This widget also includes my enhancement for map service transparency,
right click context menu for zoom to make layer visible, and my scale
dependent renderer for the TOC checkboxes.

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Accepted answers

All comments

RobertScheitlin__GISP

Phillip,

It is not a simple application of a color to the text I am setting the blend mode for the text in the TocItemRenderer.as

(tocItem.scaledependant) ? label.blendMode = BlendMode.SCREEN : label.blendMode = BlendMode.NORMAL;

RobertScheitlin__GISP

Jeremy,

I have actually never used the ThematicQueryWidget. I will have a look though.

philippschnetzer

Robert,

Thanks. I made some changes to try to change the scale dependent layer text color, like so:

(tocItem.scaledependant) ? label.blendMode = BlendMode.LIGHTEN : label.blendMode = BlendMode.NORMAL;

...also, I commented out the whole line and nothing I change seems to affect the colour. Is there another spot that is overriding the colour applied?

Or do I need to somehow compile something differently when changing an .as file?

Sorry...

RobertScheitlin__GISP

Phillip,

That line of code is in there twice once in the set data function and once in the UpdateDisplayList function. It turns out that when I set the label to enable equals false Flex applies a graying to the label and then with my code for adjusting the blend on top of that is just too much for a white background so if you comment or delete the blend code from both functions it looks OK using the white background.

CharlesHarris

Thanks Robert-

I've also added to some code to render an icon for point based feature data that is configured in the config.xml by the user. I doubt that this will have any bearing on the interaction with the ThematicQuery widget but thought that I'd throw it out there. The code that I've added will use an icon who's path is specified in the config file if there is one and then use the symbology from the server if there is not one.

Phillip-

I was having the same problem with the white background. I was able to get a good contrast by changing only the Blendmode at line 302. Below is what I've changed my Blendmode settings to.

line 302 - (tocItem.scaledependant) ? label.blendMode = BlendMode.DARKEN : label.blendMode = BlendMode.MULTIPLY

Jeremy

philippschnetzer

Robert and Jeremy, thank you both!

TracySArchibald

Thanks for the great tool! it works like a charm!

I'm not much of a ESRI person, so forgive me if I use the wrong terms!

I'm having a problem with the metadata button not displaying on certain layer types. Basically, unless it's a 'feature' type, there isn't a button. We have a few 'dynamic' services that we would like use, but then we can't access the meta data. I'm pretty sure it's something in how the service is being published... I THINK there's a field we need to fill in somewhere. I've gone through this thread, learned from others and ensured there's data under File->Map document Properties under Description as well as Right Click on the Layers -> Properties->General Description field.

We've looked through the source code, and it looks like should work fine... Any more thoughts?

Thanks everyone!

JacksonTrappett

I've been using this widget for a while now and it works great! Can't say thank you enough... Using it has brought up another issue with group layers that I was wondering if you know how to fix Robert (or anyone else). This is the issue:

Because this widget works like the ArcMap TOC, and doesn't automatically check all of it's child layers when checking a group layer, we have now started using map services where the group layers are turned off when the map loads but the child layers of that group are all on. This means that when the map loads since the group layer is not checked, nothing displays on the map even though the child layers are checked. This is exactly how we want it to work. The difficulty comes in when we start using other processes on the map.

Let's take identify for example. If I use the identify tool, and tell it to look at layers that are currently on, it shouldn't get the child layers (since their parent is off), but it does. The catch is, if I interactively toggle one of the group layers on, and then back off in the TOC, and then run the identify, it will not hit the those layers even though they are in the exact same state they were just before I toggled them on and off.

What I'm wondering is if there is a way to initialize the layers, performing the same thing that happens when manually turning something on and back off in the TOC without any user interaction. It is very confusing for users to be identifying things they don't have turned on, but the alternative of turning everything off by default causes lots of expanding and checking to have to happen when you use grouped layers.

JacksonTrappett

Came up with a fix for the above problem. It may not be the best solution but it is working for us for now. What I did was set any of the processes that hit the dynamic layer in the map to ignore it until after someone clicks one of the layers on in the TOC. To do this I just dispatched an event from inside the onCheckBoxClick function in TocItemRenderer.as and then listen for it in each of my other widgets that look at the layer controlled by the TOC. As soon as someone clicks on a check box, the tools will now pay attention to the layer.

AlisonPage

Hi Robert,
Where can you go (which mxml file) to change the color of the check boxes beside each layer? My customer has a hard time seeing the white check on the light gray background.
Thanks, Alison

RobertScheitlin__GISP

Alison,

In the CheckBoxScaleDependant.as you can change these lines:

        public function CheckBoxScaleDependant()
        {
            setStyle("icon", CheckBoxScaleDependantIcon);
            setStyle("checked", this.selected);
            setStyle("scaledependant", _scaledependant);
            setStyle("themeColor", FlexGlobals.topLevelApplication.getStyle("accentColor"));
            setStyle("iconColor", FlexGlobals.topLevelApplication.getStyle("accentColor"));
        }

LarryPhelps

Robert,

When using WMS layers in my map, is there anything I can do to keep the Generating Legend prompt to stop running ?

LarryPhelps

Robert,

When using WMS layers in my map, is there anything I can do to keep the Generating Legend prompt to stop running ?

I think I may have figured this out, let me know if this is the proper check to put in.
At the bottom of the : private function getLegendData(m_layer:*):void

I added :

}else{
FlexGlobals.topLevelApplication.dispatchEvent(new Event("legendDataLoaded$"));
}

RobertScheitlin__GISP

Larry,

That is it exactly!

KarlWilson

Robert,

The right-click menu option "Zoom To Layer Extent" always zooms to the extent of the whole layer, even if only a small subset of of it is displayed via a definition query.

Is it possible to zoom to the extent of just those defined features?

Cheers,
Karl

RobertScheitlin__GISP

Karl,

I will look into the possibility of this.

TracySArchibald

Nothing? Finding a fix would really help solve alot of problems... Even a "It can't be done" would let me look elsewhere...

I'm having a problem with the metadata button not displaying on certain layer types. Basically, unless it's a 'feature' type, there isn't a button. We have a few 'dynamic' services that we would like use, but then we can't access the meta data. I'm pretty sure it's something in how the service is being published... I THINK there's a field we need to fill in somewhere. I've gone through this thread, learned from others and ensured there's data under File->Map document Properties under Description as well as Right Click on the Layers -> Properties->General Description field.

We've looked through the source code, and it looks like should work fine... Any more thoughts?

Thanks!

RobertScheitlin__GISP

Tracy,

Once you ensure that the layers did have data in their description field and the Map document it self does did you republish the MSD and then clear your REST cache?

NCCGIA

Using the compiled Flex app V2.4 and TOC V2.4.2. We have an V10 dynamic image service in the TOC and the updating legend circle keeps spinning. It doesn't affect whether the service displays or not in the Flex viewer, but don't want to confuse the users of the app. Any help in how to turn it off? Commenting out <generatinglegendmsg> in the config file didn't help. Thanks!

-- David

RobertScheitlin__GISP

David,

I will try and get a fix out for that by next week.

RobertScheitlin__GISP

All,

An updated version is out for the TOC Widget.

Version 2.3.4:

http://www.arcgis.com/home/item.html?id=e2cb71d5c04d40d19e9f945ae0db7ce8

FaizanTayyab

Is it possible to get the legend on a seperate tab on the toc widget, hence having the TOC on one tab and the legend of all visible layers on the other. What codes changes are required?

RobertScheitlin__GISP

Faizan,

Sure that is the way it use to be but I have no plans on going backwards with this code.

FaizanTayyab

Faizan,

Sure that is the way it use to be but I have no plans on going backwards with this code.

Hi Robert,

Thanks for the quick reply. Do you have any version available to download which has a seperate TOC and legend. The only reason we need to move is that for some slow loading map services, the user has to wait for the legend to load up and can only then use the widget. We do have a large number of map services (global level).

Thanks

RobertScheitlin__GISP

Faizan,

In version 2.4.3 some steps were made to help with that issue. But to answer your question no there is not a version available for Flex Viewer 2.4 that has them separated.

FaizanTayyab

ok thanks for letting me know.

FaizanTayyab

I have been able to make the legend work. It was more of a display issue as i am using state. I have another question regarding the legend item size. Is it possible to control the size of the legend item symbol, for example (reduce the size of the rectangle drawn for a certain layer).

Thanks

TracySArchibald

Tracy,

Once you ensure that the layers did have data in their description field and the Map document it self does did you republish the MSD and then clear your REST cache?

Yep! We just did it again, to make sure... I've attached images of the test service... One image for the main mapservice and one for one of the layers within it. None of them show a metadata button, but if I change it to a feature layer with just one layer in it, the meta data button will come up.

Thanks!

test_roads.jpg

Test_roads_railway2.jpg

RobertScheitlin__GISP

Tracy,

For your second image it is the service description that is used and your is blank. I will need to test if not having a service description affects the individual layers not getting a metadata button.

RobertScheitlin__GISP

Tracy,

The Service Description is only able to be set in ArcGIS Server Manager for published services. I am struggling to reproduce your issue with the layers Description and or Copyright. So far I have not been able to reproduce the none appearing metadata button.

One thing to remember is that every time you republish your map service it clears your map services description and you have to back into ArcGIS Service Manager and reset it.

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