Fold subtrees
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26923745ad
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0ad3432141
4 changed files with 69 additions and 10 deletions
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@ -38,6 +38,12 @@ impl<M: Msg + ChatMsg, S: MsgStore<M>> InnerTreeViewState<M, S> {
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}
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}
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fn make_path_visible(&mut self, path: &Path<M::Id>) {
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for segment in path.parent_segments() {
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self.folded.remove(segment);
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}
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}
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fn cursor_line(&self, blocks: &TreeBlocks<M::Id>) -> i32 {
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if let Cursor::Bottom = self.cursor {
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// The value doesn't matter as it will always be ignored.
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@ -84,18 +90,25 @@ impl<M: Msg + ChatMsg, S: MsgStore<M>> InnerTreeViewState<M, S> {
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blocks.blocks_mut().push_back(block);
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}
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let folded = self.folded.contains(id);
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let children = tree.children(id);
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let folded_info = children
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.filter(|_| folded)
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.map(|c| c.len())
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.filter(|c| *c > 0);
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// Main message body
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let highlighted = self.cursor.refers_to(id);
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let widget = if let Some(msg) = tree.msg(id) {
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widgets::msg(highlighted, indent, msg)
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widgets::msg(highlighted, indent, msg, folded_info)
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} else {
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widgets::msg_placeholder(highlighted, indent)
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widgets::msg_placeholder(highlighted, indent, folded_info)
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};
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let block = Block::new(frame, BlockId::Msg(id.clone()), widget);
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blocks.blocks_mut().push_back(block);
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// Children, recursively
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if let Some(children) = tree.children(id) {
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// Children recursively (if not folded)
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if let Some(children) = children.filter(|_| !folded) {
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for child in children {
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self.layout_subtree(nick, frame, tree, indent + 1, child, blocks);
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}
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@ -458,6 +471,7 @@ impl<M: Msg + ChatMsg, S: MsgStore<M>> InnerTreeViewState<M, S> {
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let last_cursor_path = self.cursor_path(&self.last_cursor).await;
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let cursor_path = self.cursor_path(&self.cursor).await;
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self.make_path_visible(&cursor_path);
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let mut blocks = self
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.layout_initial_seed(nick, frame, &last_cursor_path, &cursor_path)
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