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UndoRedo add version changed signal

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added some functions to manage undo buttons
This commit is contained in:
Alexander Holland 2019-02-14 00:52:51 +01:00
parent cb8d95dd4b
commit 8f23f4b44e
3 changed files with 45 additions and 2 deletions
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23
core/undo_redo.cpp
View file

@ -336,6 +336,7 @@ bool UndoRedo::redo() {
_process_operation_list(actions.write[current_action].do_ops.front());
version++;
emit_signal("version_changed");
return true;
}
@ -348,6 +349,8 @@ bool UndoRedo::undo() {
_process_operation_list(actions.write[current_action].undo_ops.front());
current_action--;
version--;
emit_signal("version_changed");
return true;
}
@ -359,18 +362,30 @@ void UndoRedo::clear_history(bool p_increase_version) {
while (actions.size())
_pop_history_tail();
if (p_increase_version)
if (p_increase_version) {
version++;
emit_signal("version_changed");
}
}
String UndoRedo::get_current_action_name() const {
ERR_FAIL_COND_V(action_level > 0, "");
if (current_action < 0)
return ""; //nothing to redo
return "";
return actions[current_action].name;
}
bool UndoRedo::has_undo() {
return current_action >= 0;
}
bool UndoRedo::has_redo() {
return (current_action + 1) < actions.size();
}
uint64_t UndoRedo::get_version() const {
return version;
@ -523,10 +538,14 @@ void UndoRedo::_bind_methods() {
ClassDB::bind_method(D_METHOD("add_undo_reference", "object"), &UndoRedo::add_undo_reference);
ClassDB::bind_method(D_METHOD("clear_history", "increase_version"), &UndoRedo::clear_history, DEFVAL(true));
ClassDB::bind_method(D_METHOD("get_current_action_name"), &UndoRedo::get_current_action_name);
ClassDB::bind_method(D_METHOD("has_undo"), &UndoRedo::has_undo);
ClassDB::bind_method(D_METHOD("has_redo"), &UndoRedo::has_redo);
ClassDB::bind_method(D_METHOD("get_version"), &UndoRedo::get_version);
ClassDB::bind_method(D_METHOD("redo"), &UndoRedo::redo);
ClassDB::bind_method(D_METHOD("undo"), &UndoRedo::undo);
ADD_SIGNAL(MethodInfo("version_changed"));
BIND_ENUM_CONSTANT(MERGE_DISABLE);
BIND_ENUM_CONSTANT(MERGE_ENDS);
BIND_ENUM_CONSTANT(MERGE_ALL);

3
core/undo_redo.h
View file

@ -118,6 +118,9 @@ public:
String get_current_action_name() const;
void clear_history(bool p_increase_version = true);
bool has_undo();
bool has_redo();
uint64_t get_version() const;
void set_commit_notify_callback(CommitNotifyCallback p_callback, void *p_ud);

21
doc/classes/UndoRedo.xml
View file

@ -141,6 +141,20 @@
This is useful mostly to check if something changed from a saved version.
</description>
</method>
<method name="has_redo">
<return type="bool">
</return>
<description>
Returns [code]true[/code] if an 'redo' action is available.
</description>
</method>
<method name="has_undo">
<return type="bool">
</return>
<description>
Returns [code]true[/code] if an 'undo' action is available.
</description>
</method>
<method name="is_commiting_action" qualifiers="const">
<return type="bool">
</return>
@ -162,6 +176,13 @@
</description>
</method>
</methods>
<signals>
<signal name="version_changed">
<description>
Called when [method undo] or [method redo] was called.
</description>
</signal>
</signals>
<constants>
<constant name="MERGE_DISABLE" value="0" enum="MergeMode">
Makes [code]do[/code]/[code]undo[/code] operations stay in separate actions.