godot/editor/plugins/audio_stream_randomizer_editor_plugin.cpp

/*************************************************************************/
/*  audio_stream_randomizer_editor_plugin.cpp                            */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
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/* The above copyright notice and this permission notice shall be        */
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/*************************************************************************/

#include "audio_stream_randomizer_editor_plugin.h"

#include "editor/editor_node.h"
#include "editor/editor_undo_redo_manager.h"

void AudioStreamRandomizerEditorPlugin::edit(Object *p_object) {
}

bool AudioStreamRandomizerEditorPlugin::handles(Object *p_object) const {
	return false;
}

void AudioStreamRandomizerEditorPlugin::make_visible(bool p_visible) {
}

void AudioStreamRandomizerEditorPlugin::_move_stream_array_element(Object *p_undo_redo, Object *p_edited, String p_array_prefix, int p_from_index, int p_to_pos) {
	Ref<EditorUndoRedoManager> undo_redo = Object::cast_to<EditorUndoRedoManager>(p_undo_redo);
	ERR_FAIL_COND(undo_redo.is_null());

	AudioStreamRandomizer *randomizer = Object::cast_to<AudioStreamRandomizer>(p_edited);
	if (!randomizer) {
		return;
	}

	// Compute the array indices to save.
	int begin = 0;
	int end;
	if (p_array_prefix == "stream_") {
		end = randomizer->get_streams_count();
	} else {
		ERR_FAIL_MSG("Invalid array prefix for AudioStreamRandomizer.");
	}
	if (p_from_index < 0) {
		// Adding new.
		if (p_to_pos >= 0) {
			begin = p_to_pos;
		} else {
			end = 0; // Nothing to save when adding at the end.
		}
	} else if (p_to_pos < 0) {
		// Removing.
		begin = p_from_index;
	} else {
		// Moving.
		begin = MIN(p_from_index, p_to_pos);
		end = MIN(MAX(p_from_index, p_to_pos) + 1, end);
	}

#define ADD_UNDO(obj, property) undo_redo->add_undo_property(obj, property, obj->get(property));
	// Save layers' properties.
	if (p_from_index < 0) {
		undo_redo->add_undo_method(randomizer, "remove_stream", p_to_pos < 0 ? randomizer->get_streams_count() : p_to_pos);
	} else if (p_to_pos < 0) {
		undo_redo->add_undo_method(randomizer, "add_stream", p_from_index);
	}

	List<PropertyInfo> properties;
	randomizer->get_property_list(&properties);
	for (PropertyInfo pi : properties) {
		if (pi.name.begins_with(p_array_prefix)) {
			String str = pi.name.trim_prefix(p_array_prefix);
			int to_char_index = 0;
			while (to_char_index < str.length()) {
				if (str[to_char_index] < '0' || str[to_char_index] > '9') {
					break;
				}
				to_char_index++;
			}
			if (to_char_index > 0) {
				int array_index = str.left(to_char_index).to_int();
				if (array_index >= begin && array_index < end) {
					ADD_UNDO(randomizer, pi.name);
				}
			}
		}
	}
#undef ADD_UNDO

	if (p_from_index < 0) {
		undo_redo->add_do_method(randomizer, "add_stream", p_to_pos);
	} else if (p_to_pos < 0) {
		undo_redo->add_do_method(randomizer, "remove_stream", p_from_index);
	} else {
		undo_redo->add_do_method(randomizer, "move_stream", p_from_index, p_to_pos);
	}
}

AudioStreamRandomizerEditorPlugin::AudioStreamRandomizerEditorPlugin() {
	EditorNode::get_singleton()->get_editor_data().add_move_array_element_function(SNAME("AudioStreamRandomizer"), callable_mp(this, &AudioStreamRandomizerEditorPlugin::_move_stream_array_element));
}

AudioStreamRandomizerEditorPlugin::~AudioStreamRandomizerEditorPlugin() {}