I'm using QgsCollapsibleGroupBox as container for checkboxes. When the user presses on checkbox of QgsCollapsibleGroupBox it selected/deselects all (It sounds like a good idea to me, feel free to suggest a better way). I want to show the checkbox of the QgsCollapsibleGroupBox as state 1 (Inderminate state) when not all checkboxes are checked, but the documentation for it doesn't show anything about tristate checkbox for CollapsibleGroupBox. Is there a way to implement it?
Something like this:
self.qgsCollapsibleGroupBox.setChecked(1)
Related
I am wanting to allow for a user to deselect all values in a ListBox. Normally, when the user deselects all but one item, that one item cannot be deselected. I want to make it so it can be.
Thanks
Essentially I'm aware of two ways of doing this:
Add an empty item to the list. You can even name this item "None" or something similar. Using a text has the additional advantage that it informs the user.
Use JavaScript to unselect the item that is clicked if it is the last item.
Note, either way, you change the default behavior of the listbox, which is what users are accustomed to. Changing the default behavior is generally not a good idea, which is why I would go for option (1) being the clearest towards your users.
I want to create radio buttons or other type of controls that will act like this:
[_value1_] [value2] [value3]
Value1 is selected, so it looks like pressed button or selected link (bold, no underline) and other elements are active buttons/links. When user select another value - state is changed. I can handle this event manually, question is - what plugin or existing css/js combination should I use to achieve this?
I am pretty sure that this type of controls have a name, but can't think out what is this. I have tried to search for custom style radio buttons, as functionality is the same, but failed. Also I have tried some other names such as switch buttons, but it's not what I want. It's also very similar to tabs, but tabs usually styled as something that require underline div attached. So I am looking for "radio button meet tabs" css/js solution.
Can you help me to name this control, if you know it's name, or find plugin/existing code that can help me to achieve my goal?
The question is not how to create this type of functionality myself, I can do it, but it's rather strange that there are no existing solutions and I want to help people in same situation, also may be existing solutions design can be better than I can invent myself, because I am not a designer.
Answer
This type of controls can be found as "Simplified CSS Tabs" or "CSS Mini Tabs", but they require some additional code to work as expected.
Also, this type of functionality can be found in Google as jQuery UI radio buttons transformed into a button set and Yahoo UI Button Control: Radio Buttons
http://jqueryui.com/demos/button/#radio
works done for ya bud :)
Sorry for such a rudimentary question, but I am not experienced in Blend 4 much at all.
What I need to do, and based on the little I know or have seen it seems that Blend is the place to do it, is to create a "state" for a button to appear when it is disabled. i.e., the button I'm working with is a Sign Out button...the button IsEnabled property is bound to the WebContext.User.IsAuthenticated property. So, when the app is loading I want the button's "disabled state (<-- created in Blend?) to appear...once authentication is completed, the binding to IsEnabled will change, and I want the button's "enabled state" to kick in. How to accomplish this? Thanks in advance.
Your problem looks extremely similar to an issue I was having the other day.
If you go to this thread you may be able to use that as a solution: Expression Blend Interaction: How to set Trigger to Look for IsEnabled Value of Button?
I have a Boolean value there called "IsSavedAllowedBool". You would want to replace that with whatever bool you are binding to - which looks as if it might be WebContext.User.IsAuthenticated.
I have a Flex TileList with an itemRenderer made by me.
The list loads the content perfectly and renders it.
Renderer is a simple canvas element with a checkbox and another canvas with some labels with data.
I implemented a method that, on TileList itemClick="clickedItemHandler(event)", changes the state of the checkbox (if checked -> uncheck, and vice versa).
Problem is: the method works if i click on any place of the item, EXCEPT the checkbox. When i click the checkbox, it doesn't change state.
My thoughts: maybe i was changing the state of the checkbox, and the event changing it back, but i debugged it and it doesn't look like so..
The solution is actually quite simple. Perhaps the best way to make this work is making sure the CheckBox ignores mouse clicks, and this can be done by setting the "mouseEnabled" attribute to false.
Cheers
I think you're probably correct. The checkbox toggles when you click it and then you toggle it back when the event gets to the TileList. You may not see this when debugging depending on how you are confirming... you may be able to fix this by confirming that the target of the event is not a CheckBox.
I am displaying a combo box in something of a WYSIWYG preview. I want the user to be able to click on the combo box and see the options inside, but I don't want them to be able to change the value. I tried using preventDefault() on the change event but it doesn't work. I don't want to disable it because I do want the user to be able to "look inside" the dropdown.
So I'm trying to block the change, but can't. My next resort is to change the selected index back to what it was before the change, Is there any way to do this within the scope of a ListEvent.CHANGE event listener?
Current Workaround is to basically re-assign the controls selected item the same way I am defining the selected item when I originally build it (a default selection). So a user sees their change then it immediately changes back to the default selection.
Are you sure that a combobox is what you want? could you do the same thing with a list component that is not selectable?
update:
If you must use a combobox and you dont want the lag from listening for the event and resetting the control, I see two possible options. You could subclass the control and make your own. When you do, hijack any methods that set the value besides the initial selection.
Or, you could try something like this: http://wmcai.blog.163.com/blog/static/4802420088945053961/. The site seems like it is in another language but the code is still there. It will allow you to make your options disabled, so the user cannot choose one of the other options.
HTH