WIP: implement cross category drag and drop #424
Conversation
| spacing: 0 | ||
| width: 288 | ||
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| property string uuid: Utils.uuid() |
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Can get rid off this one as it's no longer used
| signal chatItemSelected(string id) | ||
| signal chatItemUnmuted(string id) | ||
| signal chatItemReordered(string id, int from, int to) | ||
| signal chatItemReordered(string categoryId, string id, int from, int to) |
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This is a breaking change and needs to be noted.
| Column { | ||
| id: statusChatListItemsWrapper | ||
| width: parent.width | ||
| spacing: 4 |
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This column is needed to get a sense of how many items live in this chatlist.
At the moment, we always pass every chat item to every chat list and hide them if they don't belong to the corresponding category. This means, the model has never a count: 0 so we have to rely on the implicitHeight of the Repeater that renders them.
We can't use the root Column for that because we have other elements living inside of it.
| originalOrder: model.position | ||
| chatId: model.chatId || model.id | ||
| categoryId: model.categoryId || "" | ||
| /* name: (!!statusChatList.chatNameFn ? statusChatList.chatNameFn(model) : model.name) + " POSITION: " + statusChatListItem.newOrder */ |
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This needs to be removed
| onDropped: statusChatList.chatItemReordered(statusChatListItem.chatId, drag.source.originalOrder, statusChatListItem.DelegateModel.itemsIndex) | ||
| Loader { | ||
| id: emptyListDropAreaLoader | ||
| active: statusChatListItemsWrapper.implicitHeight == 0 |
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This doesn't seem to be enough. When the wrapper gets an implicitHeight at runtime, the loader is still active. Hence, we're updating active explicityly in onImplicitHeightChanged
| StatusChatListDropIndicator { | ||
| anchors.bottom: parent.bottom | ||
| anchors.bottomMargin: -2 | ||
| visible: dropArea.containsDrag |
| console.log("FROM CATEGORY: ", model.categoryId) | ||
| console.log("TO: ", categoryId) | ||
| console.log("FROM POSITION: ", from) | ||
| console.log("TO POSITION: ", to) |
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Obviously these need to be removed. Leaving them for now for debugging purpose. Will go away before merge
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| spacing: 0 | ||
| opacity: dragged ? 0.5 : 1 | ||
| property string uuid: Utils.uuid() |
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Can be removed as it's no longer used. Left over from building/testing
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I think UI wise, this seems to be pretty much done.
To allow drag and drop into and out of categories we need to switch to a different approach:
DelegateModel. The reasonDelegateModelwas used in the first place, was so that the chat list can be easily visually updated as the user is dragging an item over the list (using its.move()API). Because dragged items could origin from a different category (/chat list), there's no benefit to usingDelegateModelanymoreDelegateModelalso eliminates the warnings reported in [StatusQ] bug: expanding a category produces warning status-desktop#7572 which was significantly slowing down the rendering performance.DropAreaadded toStatusChatListwhich is activated when a chat list is empty. This is needed so users can drag chat items into empty categories or even just out of categories into "uncategorized" listsorignalOrderwas just assigned the new position. We now havenewOrderfor that. Should probably rename both tooriginalPositionandnewPositionrespectively`).chatItemReorderedsignal no longer just emits the samecategoryIdin which the dragged item resides in, but rather itsnewCategoryId, in case it was dragged into a different category. Status-go is smart enough to recognize that and moves the chat item into the new category accordinglyWhat's missing:
Proper visual state update after the drop has happened but before the signal was sent to the backend.