Map preview window is empty
Newbie to GE. I have added a connection to my ArcGIS Server map services. I can successfully add them to my map/site, but none of them show in the Map Preview window. As a result, the Initial Extent button is also grayed out.
When I launch the HTML5 viewer, my map services show up as expected.
Without the map preview I cannot effectively set extents nor bookmarks. Is there something I missed in the post install or other configuration? I only installed the HTML5 viewer template, if that matters.
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I've seen this behavior in a few different situations.
- When you include map services that use both http and https
- When you use a cached map service but it isn't the bottommost layer in your drawing order
- In rare cases, the map preview simply isn't zoomed to the right location, so you have to click on of your map service layers and zoom to it
Typically there's a warning message that goes along with the first two situaitons.
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John, thanks for the reply. I am using only non-secure map services (at least currently). All of my cached map services are at the bottom of the drawing order. And, at the suggestion of Latitude folks during the Getting Started training sessions the past two days, I've reset my extents to the defaults (even though I've never been able to set them otherwise using the tools available) with no luck, so your third suggestion wasn't the cause either.
But... your comment regarding mixed http and https got me thinking. I've been using Firefox, and I had also tried Manager in Chrome with the same results. But I hadn't yet tried IE, and we all know that IE either lets everything through or at least throws up a warning message. :)
Sure enough, a message popped up warning that there was a mix of secure and non-secure content with the option to enable the non-secure content. When I enabled the non-secure content, the map preview worked as it should!
So, back in Firefox I looked for a similar warning. It took a Google search to understand that, to the left of the address bar is an easy-to-miss shield icon that appears when it is automatically blocking mixed content. You can only "Disable protection for now" and there doesn't appear to be an exception list you can place the site on. That disabling option allows the map preview to appear but every time you apply changes to your map layer list or services list (and presumably also extents), Manager re-loads the page and the shield goes up, requiring you to, yet again, disable protection "for now". I think this will drive me nuts over the course of managing my site!
IE exhibits the same behavior as Firefox, forcing you to re-enable the content, but at least it pops the warning message for you. That is only slightly less frustrating.
Chrome also puts an easy-to-miss shield on the right side of the address bar. When you click on the shield, Chrome allows you to "Load unsafe scripts". When Manager reloads a page after a Map change, it appears to "remember" that you want to load those unsafe scripts. For this reason, Chrome may become my new favorite browser for GE Manager.
Brian
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