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// -------------------------------------------                              

// This file is part of the eCos host tools.                                

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// ####ECOSHOSTGPLCOPYRIGHTEND####                                          

// configtree.h :

//

//===========================================================================

//#####DESCRIPTIONBEGIN####

//

// Author(s):   julians

// Contact(s):  julians

// Date:        2000/08/24

// Version:     $Id: configtree.h,v 1.5 2001/04/09 12:51:34 julians Exp $

// Purpose:

// Description: Header file for ecConfigTreeCtrl

// Requires:

// Provides:

// See also:

// Known bugs:

// Usage:

//

//####DESCRIPTIONEND####

//

//===========================================================================

#ifndef _ECOS_CONFIGTREE_H_

#define _ECOS_CONFIGTREE_H_

#ifdef __GNUG__

#pragma interface "configtree.h"

#endif

#include "wx/wx.h"

#include "wx/gizmos/splittree.h"

#include "configitem.h"

#define wxMAX_ICON_STATES 4

/*

The idea behind wxIconStateInfo, wxIconStateInfoDB

is to associate multiple state icons with items in tree controls

(and potentially other controls).

So instead of having to remember a lot of image list ids,

you have a named state info object which contains up to 4 different states

(identified by the integers 0 - 3). Each of these states can

be in a further 2 sub-states - enabled or disabled.

wxIconStateDB holds a list of these state info objects

and has a convenient API. For example, the following adds

icons for a checkbox item that can be: on/enabled, off/enabled,

on/disabled,off/disabled.

    m_iconDB.AddInfo("Checkbox", wxICON(checked), 0, TRUE);

    m_iconDB.AddInfo("Checkbox", wxICON(checked_dis), 0, FALSE);

    m_iconDB.AddInfo("Checkbox", wxICON(unchecked), 1, TRUE);

    m_iconDB.AddInfo("Checkbox", wxICON(unchecked_dis), 1, FALSE);

When you update the item image in response to (e.g.) user interaction,

you can say something like this:

    int iconId = m_iconDB.GetIconId("Checkbox", 0, FALSE);

    treeCtrl.SetItemImage(itemId, iconId, wxTreeItemIcon_Normal);

    treeCtrl.SetItemImage(itemId, iconId, wxTreeItemIcon_Selected);

See configitem.cpp for further examples.

These two classes are prefixed 'wx' because they are generic and may

be used elsewhere.

 */

/*

 * wxIconStateInfo

 * Stores information about the visual state of an item in a tree control

 */

class wxIconStateInfo: public wxObject

{

public:

    wxIconStateInfo(const wxString& name);

    // How many states? (Each state

    //  has enabled/disabled state)

    // Max (say) 4 states, each with

    // enabled/disabled

    int GetStateCount() const { return m_maxStates; };

    void SetStateCount(int count) { m_maxStates; }

    int GetIconId(int state, bool enabled = TRUE) const;

    void SetIconId(int state, bool enabled, int iconId);

    const wxString& GetName() const { return m_name; }

protected:

    int             m_maxStates;

    int             m_states[wxMAX_ICON_STATES * 2]; // Enabled/disabled

    wxString        m_name; // Name of icon, e.g. "Package"

};

/*

 * wxIconStateInfoDb

 * Contains a list of wxIconStateInfos

 */

class wxIconStateInfoDB: public wxList

{

public:

    wxIconStateInfoDB(wxImageList* imageList = NULL);

    void AppendInfo(wxIconStateInfo* info);

    // Easy way of initialising both the image list and the

    // info db. It will generate image ids itself while appending the icon.

    // 'state' is an integer from 0 up to the max allowed, representing a different

    // state. There may be only one, or (for a checkbox) there may be two.

    // A folder that can be open or closed would have two states.

    // Enabled/disabled is taken as a special case.

    bool AddInfo(const wxString& name, const wxIcon& icon, int state, bool enabled);

    wxIconStateInfo* FindInfo(const wxString& name) const;

    int GetIconId(const wxString& name, int state, bool enabled = TRUE) const;

    bool SetIconId(const wxString& name, int state, bool enabled, int iconId) ;

    void SetImageList(wxImageList* imageList) { m_imageList = imageList; }

    wxImageList* GetImageList() const { return m_imageList; }

protected:

    wxImageList*    m_imageList;

};

/*

 * ecTreeItemData

 * This holds an association between the tree control item

 * and the ecConfigItem.

 */

class ecConfigItem;

class ecTreeItemData : public wxTreeItemData

{

public:

    ecTreeItemData(ecConfigItem* item) : m_configItem(item) { }

    ~ecTreeItemData() { if (m_configItem) delete m_configItem; }

    ecConfigItem *GetConfigItem() const { return m_configItem; }

    void SetConfigItem(ecConfigItem *item) { m_configItem = item; }

private:

    ecConfigItem*   m_configItem;

};

/*

 * ecConfigTreeCtrl

 * This control represents the configuration hierarchy.

 * It's derived from wxRemotelyScrolledTreeCtrl because we want

 * to synchronize the tree scrolling with the value window scrolling,

 * and have the scrollbar on the right-hand-side of the value window

 * (not the tree control).

 */

class ecValueWindow;

class ecConfigTreeCtrl: public wxRemotelyScrolledTreeCtrl

{

    DECLARE_CLASS(ecConfigTreeCtrl)

public:

    ecConfigTreeCtrl(wxWindow* parent, wxWindowID id, const wxPoint& pt = wxDefaultPosition,

        const wxSize& sz = wxDefaultSize, long style = wxTR_HAS_BUTTONS);

    ~ecConfigTreeCtrl();

//// Event handlers    

    void OnMouseEvent(wxMouseEvent& event);

    void OnSelChanged(wxTreeEvent& event);

    void OnHelp(wxHelpEvent& event);

    void OnKeyDown(wxKeyEvent& event);

//// Accessors

    wxIconStateInfoDB& GetIconDB() { return m_iconDB; }

    wxMenu* GetPropertiesMenu() const { return m_propertiesMenu; }

//// Operations

    void LoadIcons();

protected:

    wxImageList*        m_imageList;

    wxIconStateInfoDB   m_iconDB;

    wxMenu*             m_propertiesMenu;

    DECLARE_EVENT_TABLE()

};

/*

 * ecValueWindow

 * This window represents the values associated with the configuration tree.

 * It scrolls synchronously with the tree control.

 */

class ecValueWindow: public wxTreeCompanionWindow

{

public:

    ecValueWindow(wxWindow* parent, wxWindowID id = -1,

        const wxPoint& pos = wxDefaultPosition,

        const wxSize& sz = wxDefaultSize,

        long style = 0);

    //// Overrides

    virtual void DrawItem(wxDC& dc, wxTreeItemId id, const wxRect& rect);

    //// Events

    void OnMouseEvent(wxMouseEvent& event);

    void OnScroll(wxScrollWinEvent& event);

    void OnExpand(wxTreeEvent& event);

    //// Accessors

    wxWindow* GetEditWindow() const { return m_editWindow; }

    //// Operations

    bool BeginEditing(ecConfigItem* item);

    bool EndEditing();

    void PositionEditWindow();

    wxRect GetItemRect(ecConfigItem* item);

    ecConfigItem*   GetCurrentConfigItem() const { return m_configItem; }

    //// Data members

protected:

    wxWindow*       m_editWindow; // Edit control

    ecConfigItem*   m_configItem; // Item being edited

    DECLARE_EVENT_TABLE()

    DECLARE_CLASS(ecValueWindow)

};

/*

 * ecSplitterScrolledWindow

 * This window holds the tree and value windows.

 * We derive a new class mainly to intercept popup menu commands from both child windows

 * without resorting to placing their handlers in the main frame.

 */

class ecSplitterScrolledWindow: public wxSplitterScrolledWindow

{

public:

    ecSplitterScrolledWindow(wxWindow* parent, wxWindowID id, const wxPoint& pt = wxDefaultPosition,

        const wxSize& sz = wxDefaultSize, long style = wxVSCROLL):

        wxSplitterScrolledWindow(parent, id, pt, sz, style)

    {

    }

//// Event handlers

    void OnWhatsThis(wxCommandEvent& event);

    void OnProperties(wxCommandEvent& event);

    void OnRestoreDefaults(wxCommandEvent& event);

    void OnVisitDoc(wxCommandEvent& event);

    void OnViewHeader(wxCommandEvent& event);

    void OnUnloadPackage(wxCommandEvent& event);

    void OnUpdateRestoreDefaults(wxUpdateUIEvent& event);

    void OnUpdateVisitDoc(wxUpdateUIEvent& event);

    void OnUpdateViewHeader(wxUpdateUIEvent& event);

    void OnUpdateUnloadPackage(wxUpdateUIEvent& event);

//// Helpers

    void RestoreDefault(wxTreeItemId h, bool bRecurse = FALSE, bool bTopLevel = TRUE);

    bool IsChanged(wxTreeItemId h, bool bRecurse);

protected:

    DECLARE_EVENT_TABLE()

};

#endif

// _ECOS_CONFIGTREE_H_