elm-drag package does not work since Elm version 0.17.
Author mentioned it had no sense since when.
https://github.com/jvoigtlaender/elm-drag/issues/2
And pointed to the:
http://elm-lang.org/examples/drag
But it only has drag not drop.
The first thing I thought about is to catch onMouseUp in the drop target. And when do some on-drop actions if the drag event is somehow reflected at the model.
But I am not sure it is a right way.
What is the proper way to implement the drop at Elm 0.17?
I would say that it is not sufficient to check a drop target for a mouseover event, but rather check if it intersects the drag target. I think that the bounding-box package could be useful.
Also, there are a couple of examples online which are somehow related to drag-and-drop (although not having arbitrary drop targets). Maybe they help:
Draggble Tabs
Sortable List, using the elm-draggable package. (disclaimer: I'm the author)
Related
I have successfully populated a TreeView via creating a TreeDataProvider and customized the icons and its collapse-able property. Now I want to be able to drag and drop its ViewItem(s) onto a WebView. There are unfortunately no samples for drag and drop. Reading through the TreeView source, ViewItem(s) are created in HeightMap.OnInsertItems() via the TreeView.createViewItem(), from the derived class.
The public TreeView.onInsertItem() would appear to be a great extension point, extending TreeView and onInsertItem() and capturing its ViewItem parameter. This Unfortunately, the creation of the concrete class, ExtHostTreeView, that is ultimately created, is buried in layers of private methods (createExtHostTreeViewer()).
Strangely, the ViewItem has a setter for draggable. However, how would you ever get a reference to the ViewItem to set it? If there is a way to do this please point me at an example. If there is not, I would be glad to fork and implement it. Leaving the existing onInsertItem and perhaps add an array of handlers to be added to with an addOnInsertItemListener() method? Or perhaps use RxJS?
There are so many places this could be used. You could drag template fragments into documents or code, DSL rules into a expert system, configuration file values into parameters or right hand values (generating the code to retrieve the value). Thank you for any assistance.
It seems that drag and drop in custom views is currently not supported. There's a (fairly popular) feature request for it here:
Add drag and drop for contributed tree views (#32592)
As of version 1.66 (March 2022) there is a TreeDragAndDropController which can be used for some drag & drop actions.
In April 2022, their sample focuses on drag & drop within a tree view: https://github.com/microsoft/vscode-extension-samples/blob/main/tree-view-sample/src/testViewDragAndDrop.ts
It is also possible to use the text/url-list type as described in the documentation to allow for dragging files to the editor panel: https://github.com/microsoft/vscode/blob/dc2f5d8dd1790ac4fc6054e11b44e36884caa4be/src/vscode-dts/vscode.d.ts#L9843-L9859
It is not clear to me yet whether it is possible to drag arbitrary data to webviews or to use standard HTML5 drag & drop API in a webview to allow dragging data to a custom tree view.
I have successfully populated a TreeView via creating a TreeDataProvider and customized the icons and its collapse-able property. Now I want to be able to drag and drop its ViewItem(s) onto a WebView. There are unfortunately no samples for drag and drop. Reading through the TreeView source, ViewItem(s) are created in HeightMap.OnInsertItems() via the TreeView.createViewItem(), from the derived class.
The public TreeView.onInsertItem() would appear to be a great extension point, extending TreeView and onInsertItem() and capturing its ViewItem parameter. This Unfortunately, the creation of the concrete class, ExtHostTreeView, that is ultimately created, is buried in layers of private methods (createExtHostTreeViewer()).
Strangely, the ViewItem has a setter for draggable. However, how would you ever get a reference to the ViewItem to set it? If there is a way to do this please point me at an example. If there is not, I would be glad to fork and implement it. Leaving the existing onInsertItem and perhaps add an array of handlers to be added to with an addOnInsertItemListener() method? Or perhaps use RxJS?
There are so many places this could be used. You could drag template fragments into documents or code, DSL rules into a expert system, configuration file values into parameters or right hand values (generating the code to retrieve the value). Thank you for any assistance.
It seems that drag and drop in custom views is currently not supported. There's a (fairly popular) feature request for it here:
Add drag and drop for contributed tree views (#32592)
As of version 1.66 (March 2022) there is a TreeDragAndDropController which can be used for some drag & drop actions.
In April 2022, their sample focuses on drag & drop within a tree view: https://github.com/microsoft/vscode-extension-samples/blob/main/tree-view-sample/src/testViewDragAndDrop.ts
It is also possible to use the text/url-list type as described in the documentation to allow for dragging files to the editor panel: https://github.com/microsoft/vscode/blob/dc2f5d8dd1790ac4fc6054e11b44e36884caa4be/src/vscode-dts/vscode.d.ts#L9843-L9859
It is not clear to me yet whether it is possible to drag arbitrary data to webviews or to use standard HTML5 drag & drop API in a webview to allow dragging data to a custom tree view.
Firefox addon. I'm porting an existing addon to a restartless one. I have a panel with a lot of UI elements (mostly boxes/description and images) in it, and it is very convenient for me to define the panel elements in an XUL overlay file. I will have lots of bloated js code if I don't.
The panel element (parent) itself is created in code dynamically, and then I use loadOverlay, wait for the 'merged' event and then append the panel element's children from the overlayed document. I also make sure that the elements are cleaned up upon a remove.
However, using overlays will most probably won't pass an AMO review. And some of the reasons I think are :
In most cases overlay elements will cause problems while removing (eg: toolbar buttons remembering their positions etc.)
There are problems with attaching js/css files in an overlay file.
loadOverlay is buggy (496320, 330458)
And here are my inferences :
loadOverlay() API itself is not deprecated - in fact it is 'not frozen and may change later' - which means possibly it will be use-able in future.
The bug that a second overlay load fails, is not applicable in my case, as I don't initialize without an overlay merge.
Using static overlay for preference windows etc. is perfectly acceptable as of now.
The panel in my case behaves a lot like a preference window (which is brought up on demand and cleaned up upon addon removal)
I don't have any js/css attached to the overlay, nor any event listeners for the elements. The overlay is only used to define boxes and description text - nothing more.
So considering these, is it acceptable to use overlays and loadOverlay() for a restartless addon ? If not, is there an alternative ?
About overlays, by checking source code of restartless addon that extend existing addon (like ehh), I see the overlay.xul is auto merged with the existing addon's. So it shouldn't be a problem to use overlay.
First of all drag and drop works correctly in my stages in version 4.3.0, so I just want to understand why I get the following problem with 4.3.3.
I have three stages. One sits in a container in a document in an iframe. The others sit in containers in the iframe's parent document, one displaying a complex layout of shapes and the other a single simple shape for testing. The document in the iframe which controls all the action has a viewfinder overlay that drags and drops correctly. However the shapes in the layout and test stages do not release on mouseup.
Any idea about what's going on would be appreciated ... I like to try and keep up to date.
Well, since I can't see any of your code I can only help so much, try doing the following.
For each shape that you have, add this attribute:
dragOnTop: false
example:
Kinetic.Rect({
fill: 'blue',
dragOnTop: false
});
Let me explain how I found an answer by first amending the structure. There is a holding file which contains shared files and two iframes - one for a machine-like index and one for a display each with its own scripts. The main shared file is nameset.json which lists all the objects and their key/value couplets. These are sent to 'fill out' the machine and display frameworks. I thought I could do the same with the Kinetic Global object, referring to the Global.stages array. It seems obvious now that each of the iframes needs its own Kinetic link (rather than pointer) and these need to be used to marry machine/display interactions like the map shown here. Anyway all the dragging and dropping works smoothly as promoted. Thanks for that!
Will mark as answered but if anyone has any comments would be pleased to read them.
I'm extremely new to cocos2D development and I have hit a problem with my background. I want it to repeat scrolling every 2000px so I have looked around and found this (in this tutorial):
[_backgroundNode incrementOffset:ccp(2000,0) forChild:background];
I have set this up in my program however it doesn't recognise the method 'incrementOffset'. Is there something I'm doing wrong? I have imported "CCParallaxNode.h", however it says I need to import "CCParallaxNode-Extras.h" which doesn't exist?!
To quote the tutorial:
I’ve created a category on CCParallaxNode that you can use to solve
this problem, which you can find in the resources for this project in
the Classes folder. Drag CCParallaxNode-Extras.h and
CCParallaxNode-Extras.m into your project, make sure “Copy items into
destination group’s folder” is checked, and click Finish.