I Have a JButton (or any Component, really) that I would like to trick into thinking that it has been clicked on and therefore firing its action performed event. I don't want to call the action performed or doClick directly because I am trying to make a solution that generalizes beyond buttons, and I am constrained to posting events.
I would have thought that posting a MousePressed event to the system event queue would have done it, but no. ( with appropriate location, click count etc.)
Then I thought a mouse entered followed by a mouse move, a mouse pressed, a mouse released, and a mouse clicked, but no.
None of this causes the JButton to fire its action performed like it does when I actually click on it.
Has anyone caused a JButton to spit out its action performed event by driving it with mouse events? Moved a JSlider with mouse events? Expanded a tree node?
Thanks for any help.
Have you tried the fireActionPerformed method? I can't off the top of my head now remember if all components have it but if i remember right, all buttons and menu items should deifnately have it. Just a thought
Related
I'm coding a game for Android on Flash using AS3. My problem is that when I shoot a rocket or bullet at an enemy the user can repeatedly press the virtual button (on screen), this defeats the object of the game. Is there any way to limit how often a user can press this button so it can be pressed every half second or so? Many Thanks. (will provide code upon request if needed)
In the event handler that handles the button press, remove the listener.
This alone would disable the button.
Additionally, start a Timer.
Upon completion of the timer, re-add the listener for the button press, which allows pressing the button again, but only after the timer completed.
My movie has 3 frames, first one is the welcome screen with the play button, and after I press it and jumped to frame2 I have to click the movie for my character/player to respond and move by arrows. Same happens if I go back to frame2 from my game-over screen placed on frame3.
I use gotoAndPlay(); to navigate frames, naturally.
if it's something having to do with my code from frame2 i will post what it is required. I'd like to know why is that happening and how to fix it. THANKS!
Clicking your character gives it focus.
Only* what has focus receives keyboard events.
If you register the listener for the keyboard event on your character object, you have to click it first, before it receives those events.
However, the KeyboardEvents bubble up the display list and eventually reach the top most container which is the stage. This gives you two options:
Handle the focus yourself by assigning the object that should have focus to the stage.focus property. This is basically doing what the clicking does in your current situation.http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/display/Stage.html#focus
register your listeners at the stage
The user simply needs to click anywhere on the flash stage to add keyboard focus. Normally, a good way of achieving this is by using a start button, or something similar, for that first bit of mouse/keyboard focus.
When I change scene with the use of a button in my game it seems to deselect the window. Then it does not respond to keyboard input without clicking the window again afterwards.
Is there a way to stop this with some sort of command or a way to bypass this with a different method.
When you click an object that object gains focus. During your buttons MouseEvent.CLICK event listener, you need to call the setFocus() function on the object you need the key strokes on.
I am trying to build a custom modal dialog in flash. The way I chose to go about it is create a movie clip class with the UI for the dialog with a function to add buttons to it. I then size the ui after all the buttons are added and display it on the screen.
It works up to this point. Now I want whatever called this dialog to wait until a button is picked before the user can do anything else. Something along the lines of:
var dialog:MyDialog = new MyDialog();
dialog.addButton(new MyButton("Foo"));
dialog.addButton(new MyButton("Bar"));
var result:String = dialog.show(); // we will wait here
In the dialog.show I wish to show the movie clip and then wait for the user to click and of the buttons on the dialog before returning. The MouseEvent.CLICK event is asynchronous though so I don't know how to wait for it.
An alternative is creating a whole custom complete event for the dialog that is added to the screen that is calling the dialog which I can continue the logic in and have a boolean that disables other input, but that is a pretty big hassle and I've never done anything like it.
What your describing is a misconception of what synchronous and asynchronous is.
When the dialog comes up, you still want the user to be able to hit the dialog button. If the procedure was synchronous then the entire program would freeze as the routines for the mouse clicking actions would never arrive. Remember, flash is single threaded.
The thread that has the popup is sharing the same thread as the underlying app.
The easiest thing is just to have an event on the buttons that dispatch some close event that you can listen for in your application. No custom event classes are needed.
dispatchEvent(new Event("close"))
as an example.
If your worried about the user interacting with parts outside of the application, then you can simply draw a rectangle behind the popup with mouseEnabled true, or check out using Flex's model dialog classes.
I'm creating a game in Flash CS5.5, basically a version of "Who wants to be a millionaire?".
I have an answerDisplay Class which contains an answer text. Answer texts can become rather long, and since I have limited screen space I check for very long texts and if a text is too big I add a UIScrollbar besides the text field.
Which works nicely, except for one thing - when the user drags the scroll tab, the text scrolls fine. When the user clicks one of the scrollbar arrows the text field also scrolls fine, as long as the button is clicked, but as soon as the mouse button is released the click event of the containing answerDisplay class is fired, which leads to my program wrongly thinking the user had selected the answer while he just tried to scroll.
I tried catching this via e.target and/or e.currenttarget, but it's no use, I never get a reference to the scrollbar, so I'm never sure if the user clicked one of the arrows or if he genuinely clicked the answer to select it.
How can I make certain that the click event of my answerDisplay Class is not fired when the UIScrollbar is used?
Checking e.target and e.currentTarget is a good start.
You might also want to check the event phase:
For more details on event phase, check grapefrukt's answer
A click from the answerDisplay Class dispatched event should have AT_TARGET phase, while the UIScrollbar event should have the BUBBLING_PHASE. This should help you differentiate between the two.
Also, you could add event listener to the UIScrollbar in your answerDisplay Class to capture the event and then suppress it via stopPropagation().
Depending on how UIScrollbar uses event bubbles internally, you can try either stopPropagation(), either stopImmediatePropagation(). The goal is to stop the event bubbling up from answerDisplay, but not breaking the UIScrollbar functionality.