// Copyright (c) 2007, Rodrigo Braz Monteiro
// All rights reserved.
//
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// modification, are permitted provided that the following conditions are met:
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//     this list of conditions and the following disclaimer.
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//     this list of conditions and the following disclaimer in the documentation
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// Aegisub Project http://www.aegisub.org/
//
// $Id$

/// @file visual_tool_drag.h
/// @see visual_tool_drag.cpp
/// @ingroup visual_ts
///

#ifndef AGI_PRE
#include <wx/bmpbuttn.h>
#include <wx/toolbar.h>
#endif

#include "visual_feature.h"
#include "visual_tool.h"

/// @class VisualToolDragDraggableFeature
/// @brief VisualDraggableFeature with a time value
class VisualToolDragDraggableFeature : public VisualDraggableFeature {
public:
	int time;
	std::list<VisualToolDragDraggableFeature>::iterator parent;
	VisualToolDragDraggableFeature() : VisualDraggableFeature(), time(0) { }
};


/// DOCME
/// @class VisualToolDrag
/// @brief DOCME
///
/// DOCME
class VisualToolDrag : public VisualTool<VisualToolDragDraggableFeature> {
	/// The subtoolbar for the move/pos conversion button
	wxToolBar *toolBar;
	/// The feature last clicked on for the double-click handler
	/// Equal to curFeature during drags; possibly different at all other times
	/// Null if no features have been clicked on or the last clicked on one no
	/// longer exists
	Feature *primary;
	/// The last announced selection set
	Selection selection;
	int change;

	/// When the button is pressed, will it convert the line to a move (vs. from
	/// move to pos)? Used to avoid changing the button's icon unnecessarily
	bool toggleMoveOnMove;

	/// @brief Create the features for a line
	/// @param diag Line to create the features for
	/// @param pos Insertion point in the feature list
	void MakeFeatures(AssDialogue *diag, feature_iterator pos);
	void MakeFeatures(AssDialogue *diag);

	bool InitializeDrag(feature_iterator feature);
	void CommitDrag(feature_iterator feature);

	/// Set the pos/move button to the correct icon based on the active line
	void UpdateToggleButtons();

	// Overriding SubtitleSelectionListener inherited from base VisualTool<>
	void OnSelectedSetChanged(const Selection &lines_added, const Selection &lines_removed);

	void OnFrameChanged();
	void OnFileChanged();
	void OnLineChanged();

	void Draw();
	bool Update();
public:
	VisualToolDrag(VideoDisplay *parent, agi::Context *context, VideoState const& video, wxToolBar *toolbar);

	void OnSubTool(wxCommandEvent &event);
};