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Improve undo/redo

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This commit is contained in:
fiaxh 2017-08-25 12:04:03 +02:00
parent b672df94e8
commit f3e587d766
1 changed files with 9 additions and 6 deletions
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15
main/src/ui/chat_input/edit_history.vala
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@ -20,6 +20,10 @@ class EditHistory {
this.text_input = text_input;
text_input.key_press_event.connect(on_text_input_key_press);
text_input.cut_clipboard.connect_after(save_state);
text_input.paste_clipboard.connect_after(save_state);
text_input.move_cursor.connect_after(save_state);
text_input.button_release_event.connect_after(() => { save_state(); return false; });
}
public void initialize_for_conversation(Conversation conversation) {
@ -36,18 +40,13 @@ class EditHistory {
} else if (ctrl_pressed && (event.keyval in new uint[]{ Key.Z, Key.y } )) {
redo();
} else if (event.keyval in new uint[]{ Key.space, Key.Tab, Key.ISO_Left_Tab }) {
if (indices[conversation] < histories[conversation].size - 1) {
histories[conversation] = histories[conversation].slice(0, indices[conversation] + 1);
}
save_state();
}
return false;
}
private void undo() {
if (histories[conversation][indices[conversation]] != text_input.buffer.text) {
save_state();
}
save_state();
if (indices[conversation] > 0) {
indices[conversation] = indices[conversation] - 1;
text_input.buffer.text = histories[conversation][indices[conversation]];
@ -62,6 +61,10 @@ class EditHistory {
}
private void save_state() {
if (histories[conversation][indices[conversation]] == text_input.buffer.text) return;
if (indices[conversation] < histories[conversation].size - 1) {
histories[conversation] = histories[conversation].slice(0, indices[conversation] + 1);
}
histories[conversation].add(text_input.buffer.text);
indices[conversation] = indices[conversation] + 1;
}