Flex :: Prevent In Drag And Drop, Dragging Onto Self?
Oct 19, 2009
I was wondering, if I have two list boxes, and I want to drag and drop between both of them, how do I prevent the user from dragging onto the same list (thus duplicating the item? I cannot have a situation where that is the case
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Similar Posts:
Mar 22, 2010
how would you prevent dragging for some items of your List or DataGrid?
Let's say I had a list with two items: 'Tom' and 'Jerry'. Only 'Tom' should be dragable, not 'Jerry'.
Ideally I had a 'isDragEnabled(item:Object):Boolean' function, which is being queried by the drag source.
My difficulties start with the fact that the 'dragStart' event handler has a null value for the dragSource, so right from the start I find it hard to find out what the drag-start is about..
PS There have been a few discussions on preventing or canceling a drop, but I haven't seen much about preventing the drag start, hence this question.
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Feb 23, 2012
I have an AdvancedDataGrid with editable parameter to "true". My problem is that after a successfull drag & drop, the item is being edited and I don't want this to happen. I tried to create a custom advancedDataGrid with this:
[Code]...
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Sep 26, 2009
Is it possible to handle keystrokes WHILE dragging? I found this to be impossible, because hitting a key always fires an "onRelease" or "onReleaseOutside" event on the dragged movieclip when releasing the key - intterupting the drag operation. What I want to do is something like this: Drag and Drop a Movieclip and while dragging it I want to be able to flip it with a keystroke.
[Code]...
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Apr 25, 2005
I have several drag and drop interactions in which they get points if they drag it to the correct position. The problem is they can move it out and back again to keep adding points to their score. I need to put some code in the correct portion of the drag and drop code that will make the word stay where it is when it's correct instead of letting them drag it again.
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Apr 25, 2005
I have several drag and drop interactions in which they get points if they drag it to the correct position. The problem is they can move it out and back again to keep adding points to their score. I need to put some code in the correct portion of the drag and drop code that will make the word stay where it is when it's correct instead of letting them drag it again.
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Sep 6, 2009
I have run into a drag and drop issue .I have an item that I would like to drag and drop. Seems simple enough, but I also want to make it that if the user drags the image off the screen, that it stops dragging and returns the image to the center of the screen. What happens now is that it continues dragging and sticks to the cursor if you release outside of the viewable area. The original piece has a lot of other things going on, so I ve created a simple piece with the AS in the timeline that shows only this particular issue.
Code:
var mrT:MC_mrT = new MC_mrT;
addChild(mrT);
mrT.x = stage.stageWidth*.5;[code].............
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Oct 29, 2010
i'm new to flash AS3. I am trying to create an drag drop activity where the user can match words and meanings by dropping and dragging into the right space. At the moment I want to create multiple drop areas for the boxes. At the moment they will only fall within their own target area - also only the boxes move and not the text. How do i create mutiple drop areas for the words and meanings?
[Code]....
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Nov 22, 2010
I have a canvas onto which I draw shapes like rectangle etc. When I move the shape using my custom mouse down/mouse move handler, the shape can go outside the parent bounds.
I am checking if the child is outside the parent's bound to snap it back:
var bounds:Rectangle = this.getBounds(this.parent);
var p:Point;
if (bounds.x <0) {
[Code]...
The snapInside method gets called when I go outside the left or top boundary. But when the child is dragged outside the right or bottom boundary, I find Flex/Flash runtime automatically expands the parent's height and width. So say the parent size was initially 800x600, if child Y bounds exceed 800 by say 20 pixel, I find the this.parent.height automatically resized by flex to 820!!
How do I prevent the parent from resizing when child goes outside the original bounds of the parent ?
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Feb 23, 2010
I'd love to be able to prevent dragging of a HDividedBox's divider based on a condition. for example:
[Code]...
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Mar 3, 2011
How can I constrain an image in a container to only a horizontal drag that when it collides with another image 'pushes' that image along that same horizontal line.
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Oct 11, 2010
How do I prevent a user from dropping an item outsider a folder? My dataProvider is only 1-level deep.It seems that with a DragEvent handler or DragDrop handler I can find the data of the item I'm dragging, but not where I'm dropping ( so I can prevent it ).
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Dec 21, 2011
When you drag the edge of container with mouse ,how to implement changing the size of container?
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Nov 20, 2011
So there's been a new "feature" in the flash player since version 10.1, which reduces the player's framerate to 2 fps when the application window is out of view. This is good news for performance, but it can break some functionality, such as the Timer class.
I have an application which uses a Timer to display a countdown. Given the nature of the application, it is required for the Timer to complete its countdown even if the user is not there to see it. Imagine that you need to give the user only 10 seconds to perform a task. If the user minimizes the window halfway through the counter, they can take as much time as they want and still have 5 seconds left when they return to the window. This apparently can not be avoided with the newer flash players.
In Air applications there is the backgroundFrameRate property which can be set to prevent this behavior, but this is part of the WindowedApplication class, so it seems that it is not available in a web application. Does anyone know a way to keep a constant frame rate even when the window is not visible?
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Mar 29, 2011
I'm making a Matching Game where I have some images on my left and I can drag them onto images on my right and if they are matching, they should both disappear from the stage.
[Code]....
findMatch() is a function that finds in my XML file the path of the file that matches the file that is being dragged. Having that path, I send it to dragEnterHandler where it compares it with the path of the dropTarget file and if they are the same, it accepts it. Then in dragDropHandler, I'm changing the source path of my second image to "", so that it disappears from the stage. How can I access the first file (the one that was being dragged), so that I can change its path to "", to get rid of it?
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May 31, 2011
I wish while i am draging and moving arround TitleWindow instance and a specific event occure to simulate drop of the window, and not further moving been possible for a few seconds.It is very unusual question but it will be more than handy each point to a solutionP.S: The whole idea is as follow : When i am draging a TitleWindo instace with the mouse, and if the TitleWindow hit the border of it's parent container then to drop the TitleWindow, and not further moving is possible (simulating release mouse button). If i wish to move it again, then i should click the TitleWindow title again and grag it.
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Oct 25, 2010
i have two tree one tree lets say TreeDrag is drag enabled and other is drop enabled lets say TreeDrop.. when i drag item from TreeDrag to TreeDrop,, i want to show feedback and everything else normal except the addition of dragged item in TreeDrop..
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May 19, 2009
I am trying to do a flex drag and drop. It is very similar to this first example.url....The problem is that event.currentTarget.mouseX,mouseY is showing the position where I put the mouse down rather than the position where I had finished dragging.
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May 5, 2010
we want to drag a button with a css layout from one grid to the other. On the second grid should be the same button with this layout. The grids are in different mxml files.
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Feb 1, 2011
I'm doing an application in flex where I draw different sprites inside a canvas. Depending of the dimensions, scrollbars can be appear. I would like to move the "image" with the movement of the mouse as you can see at the Adobe Reader when you are reading a document with zoom (hand mouse icon). In this way, you dont have to touch the scrollbar.I'm start trying with drag and drop properties of the canvas, setting the position of the scrollbar according with the movement of the mouse but that is not as I expect.
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Mar 7, 2011
I am dragging item from a datagrid and while dragging I could see all of the columns in the selected record, being getting dragged. However I only want to show one column (maybe name or id of the record)? Is there a way to achieve this? Also, could I show an icon or image instead of the record while dragging.
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Apr 27, 2011
I am building a flex project involving drag+drop of fxg graphics. My graphic is instantiated as below:
<graphics:arrow2 id="object" mouseMove="mouseMoveHandler(event);" />
I get an error: "Call to a possibly undefined method Graphic."
This works if I change my drag-object to Image and replace the 'Graphic' below with 'Image'. What should I use to be able to reference the fxg graphic in the drag-drop? My drag drop functionality is as follows
private function mouseMoveHandler(event:MouseEvent):void {
var dragInitiator:Graphic = Graphic(event.currentTarget);
var ds:DragSource = new DragSource();
ds.addData(dragInitiator,"gph");
DragManager.doDrag(dragInitiator, ds, event);
[Code] .....
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Apr 28, 2011
We need a capability by which we can drag and drop swc components in our Flex Application.
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Feb 26, 2011
I have implemented drag and drop between 2 AdvancedDataGrid, but the default behaviour from Flex displays the row data during the drag using the grid item renderer showing all 5 columns.
Instead, I would like to display an icon / image or my own custom item renderer during the drag and drop.
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Sep 14, 2009
How do I determine which Flex AdvancedDataGrid cell - row and column index - I've just dropped onto? calculateDropIndex seems to give me the row, but how do I get the column?
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Dec 8, 2009
[code]I want a tree in this structure, having line between the nodes, also, instead of Open and Close Folders, I have added my own graphic there with label. I did by extending TreeItemRenderer Class. Now, I if iam dragging and dropping a child node ex:label5, and try i drop it above label1 here, it is getting dropped there. i.e.,it is becoming like.[code]
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Jan 18, 2010
I have a Advanced DataGrid for displaying the number of rows from the Database and one row strictly should not allowed drag option. Is is possible
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Aug 10, 2010
I'm trying to drag an item from a datagrid and drop it onto a UIComponet. Basically I just want the UIComponent to know that something has been dropped onto it and allow it to access the data of the dropped item.
I thought just listening for the drop event would do it but it seems not.
I found lots of documentation on dragging from one IList to another but nothing for this.
<mx:UIComponent xmlns:mx="http://www.adobe.com/2006/mxml"
initialize="init(event)" dragDrop="itemDropped(event)">
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Sep 13, 2010
I need to detect when a user d-b-n-d an object into a sprite. I'm adding the 3 event listeners I need, but only one of them works:
ontainer.addEventListener( DragEvent.DRAG_ENTER, dragEnterHandler);
container.addEventListener( DragEvent.DRAG_EXIT, dragExitHandler);
container.addEventListener( DragEvent.DRAG_DROP, dragDropHandler);
[code]....
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Oct 10, 2010
I have a Spark List with a TileLayout. I want to enable moving itemRenderers around to be able to order items.
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