diff options
| -rw-r--r-- | core/undo_redo.cpp | 23 | ||||
| -rw-r--r-- | core/undo_redo.h | 3 | ||||
| -rw-r--r-- | doc/classes/UndoRedo.xml | 21 |
3 files changed, 45 insertions, 2 deletions
diff --git a/core/undo_redo.cpp b/core/undo_redo.cpp index f7ca6d3bde..f0c2b8eb9b 100644 --- a/core/undo_redo.cpp +++ b/core/undo_redo.cpp @@ -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); diff --git a/core/undo_redo.h b/core/undo_redo.h index e2cc6c659b..276d00d9af 100644 --- a/core/undo_redo.h +++ b/core/undo_redo.h @@ -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); diff --git a/doc/classes/UndoRedo.xml b/doc/classes/UndoRedo.xml index c0b73cd8e3..b6e458b43f 100644 --- a/doc/classes/UndoRedo.xml +++ b/doc/classes/UndoRedo.xml @@ -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. |