1 #ifndef __lib_listbox_h
2 #define __lib_listbox_h
4 #include <lib/gui/ewidget.h>
5 #include <connection.h>
10 class iListboxContent: public iObject
13 virtual ~iListboxContent()=0;
15 /* indices go from 0 to size().
16 the end is reached when the cursor is on size(),
17 i.e. one after the last entry (this mimics
20 cursors never invalidate - they can become invalid
21 when stuff is removed. Cursors will always try
22 to stay on the same data, however when the current
23 item is removed, this won't work. you'll be notified
28 friend class eListbox;
29 virtual void updateClip(gRegion &){ };
30 virtual void cursorHome()=0;
31 virtual void cursorEnd()=0;
32 virtual int cursorMove(int count=1)=0;
33 virtual int cursorValid()=0;
34 virtual int cursorSet(int n)=0;
35 virtual int cursorGet()=0;
37 virtual void cursorSave()=0;
38 virtual void cursorRestore()=0;
42 virtual int currentCursorSelectable();
44 void setListbox(eListbox *lb);
46 // void setOutputDevice ? (for allocating colors, ...) .. requires some work, though
47 virtual void setSize(const eSize &size)=0;
49 /* the following functions always refer to the selected item */
50 virtual void paint(gPainter &painter, eWindowStyle &style, const ePoint &offset, int selected)=0;
52 virtual int getItemHeight()=0;
60 ePtr<gPixmap> m_background, m_selection;
61 int m_transparent_background;
62 gRGB m_background_color, m_background_color_selected, m_foreground_color, m_foreground_color_selected;
63 int m_background_color_set, m_foreground_color_set, m_background_color_selected_set, m_foreground_color_selected_set;
66 {m_transparent_background m_background_color_set m_background}
67 {0 0 0} use global background color
68 {0 1 x} use background color
69 {0 0 p} use background picture
70 {1 x 0} use transparent background
71 {1 x p} use transparent background picture
75 class eListbox: public eWidget
77 void updateScrollBar();
79 eListbox(eWidget *parent);
82 PSignal0<void> selectionChanged;
89 void setScrollbarMode(int mode);
90 void setWrapAround(bool);
92 void setContent(iListboxContent *content);
102 int getCurrentIndex();
103 void moveSelection(int how);
104 void moveSelectionTo(int index);
109 enum ListboxActions {
119 void setItemHeight(int h);
120 void setSelectionEnable(int en);
122 void setBackgroundColor(gRGB &col);
123 void setBackgroundColorSelected(gRGB &col);
124 void setForegroundColor(gRGB &col);
125 void setForegroundColorSelected(gRGB &col);
126 void setBackgroundPicture(ePtr<gPixmap> &pixmap);
127 void setSelectionPicture(ePtr<gPixmap> &pixmap);
129 struct eListboxStyle *getLocalStyle(void);
131 /* entryAdded: an entry was added *before* the given index. it's index is the given number. */
132 void entryAdded(int index);
133 /* entryRemoved: an entry with the given index was removed. */
134 void entryRemoved(int index);
135 /* entryChanged: the entry with the given index was changed and should be redrawn. */
136 void entryChanged(int index);
137 /* the complete list changed. you should not attemp to keep the current index. */
138 void entryReset(bool cursorHome=true);
141 void invalidate(const gRegion ®ion = gRegion::invalidRegion());
143 int event(int event, void *data=0, void *data2=0);
147 int m_scrollbar_mode, m_prev_scrollbar_page;
148 bool m_content_changed;
149 bool m_enabled_wrap_around;
151 int m_top, m_selected;
153 int m_items_per_page;
154 int m_selection_enabled;
155 ePtr<iListboxContent> m_content;
156 eSlider *m_scrollbar;
157 eListboxStyle m_style;