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UI: Generalize drop target API, support them for UI views #105963

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Julian Eisel wants to merge 8 commits from JulianEisel:temp-ui-view-drop-controller into main
pull from: JulianEisel:temp-ui-view-drop-controller
merge into: blender:main

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Conversation 3 Commits 8 Files Changed 13 +7 -2
1 changed files with 7 additions and 2 deletions
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source/blender/editors/include/UI_interface.hh
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@ -61,8 +61,13 @@ void attribute_search_add_items(StringRefNull str,
bool is_first);
/**
* Interface class to implement dropping for various kinds of UI elements. This isn't used widely
* yet, only UI views and view items use it.
* This provides a common interface for UI elements that want to support dragging & dropping
* entities into/onto them. With it, the element can determine if the dragged entity can be dropped
* onto itself, provide feedback while dragging and run custom code for the dropping.
*
* Note that this is just an interface. A #wmDropBox is needed to request instances of it from a UI
* element and call its functions. Currently only #AbstractView and #AbstractViewItem have this and
* make use of the interface this way.
*/
class DropTargetInterface {
public: