Is there a possibility to set a Channel Icon - mattermost

I was wondering whether it is possible to define a costume mattermost channel item. In our team we have several channel and some of them are more important then others, so a costume icon would stick out.

Mattermost doesn't yet has this feature, but you can add an emoji before the channel name to give a visual indicator.

Related

Hangouts Interactive cards: how to add text fields?

Can we design an interactive card with a text filed?
I went through the documentation, i couldn't find any idea on how to create
checkbox
text field
can someone help me in this matter?
Considerations
At the moment there are no such widgets available. You can only interact with buttons or clicking on text paragraphs.
You should definitely request this as a new feature if it's fundamental for your workflow.
Proposed workaround
However, since this is a messaging App you can build a system that uses the very same "reply" feature in order to get back the user input and therefore simulate a text field.
Respond to message events
You can play with the message events in order to parse the reply and use it in your application and provide an appropriate answer to your users.
Build your prompts based on custom commands
You can also create custom commands to trigger different input requests if you want to.
References
Events
Custom commands

Applescript: Notification centre alert with specific Icon

I understand that there is a very limited number of options to do with the Applescript notification alert call, but I am curious as to whether alerts can be called with icons or specified images to better identify them?
I ask this as i have seen it employed by other Applications which use the Notification Centre, and each Application has its notifications heralded by its own Application Icons.
Example:
Thanks in Advance.
Basically it's not possible to change the icon programatically.
A workaround is to save the script as application and change the icon (applet.icns) in the Resources folder of the package.

Mac/Cocoa - Settings Pane Refresh App

I have an app that has 2 parts: A preference pane and an app that runs in the background.
I need the user to input some secure data in the preference pane, the pane then saves it to the keychain. My question is, what is the best way for the preference pane to tell the app to update from the keychain?
Let me know if you need anymore information
Thanks in advance.
Use NSDistributedNotificationCenter. The API is similar to NSNotificationCenter except that a distributed notification can be posted and received across process boundaries. So in your case, the preference pane would post a distributed notification with some unique name, and the app would register for that notification to know when to update from the Keychain.

Icons in Activity Monitor?

In the above image some processes have "icons" beside their names. What characteristic must a process meet to have an "icon" beside its name? Note the defining characteristic is not simply being in the Applications folder since several processes location in the Applications folder don't have the icon.
In addition how can I check if a PID meets the defining criteria in Objective-C? (Using Cocoa on OSX)
I think only applications that appear with their icon in the dock when you open them do have an icon in the activity monitor.
Applications that have "checked in" with Launch Services as a UI app get icons. Technically speaking, anything that ends up calling LSApplicationCheckIn will get one, but that's not a call you can make yourself.
If you run a standard NSRunLoop, or even initialize NSApplication ([NSApplication sharedApplication]) you should get it.
My question is: what are you doing that you're not getting it?

Create new document programmatically in Cocoa

I'm wondering if it is possible to send a message (programmatically) to a document-based application to create a new document with some special content inside it. I'm creating two applications and the first has to call the second one sending it some data.
I've tried with the Apple Events but it doesn't seem to work.
There are a number of ways to do this. If you control both applications, probably the simplest is to post a notification to the global notification center from one application, and have the other app listen for it. AppleScript is another way, but requires a bit more work to set up.