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 cursorHome()=0;
30 virtual void cursorEnd()=0;
31 virtual int cursorMove(int count=1)=0;
32 virtual int cursorValid()=0;
33 virtual int cursorSet(int n)=0;
34 virtual int cursorGet()=0;
36 virtual void cursorSave()=0;
37 virtual void cursorRestore()=0;
41 virtual int currentCursorSelectable();
43 void setListbox(eListbox *lb);
45 // void setOutputDevice ? (for allocating colors, ...) .. requires some work, though
46 virtual void setSize(const eSize &size)=0;
48 /* the following functions always refer to the selected item */
49 virtual void paint(gPainter &painter, eWindowStyle &style, const ePoint &offset, int selected)=0;
51 virtual int getItemHeight()=0;
59 ePtr<gPixmap> m_background, m_selection;
60 int m_transparent_background;
61 gRGB m_background_color, m_foreground_color;
62 int m_background_color_set, m_foreground_color_set;
65 {m_transparent_background m_background_color_set m_background}
66 {0 0 0} use global background color
67 {0 1 x} use background color
68 {0 0 p} use background picture
69 {1 x 0} use transparent background
70 {1 x p} use transparent background picture
74 class eListbox: public eWidget
76 void updateScrollBar();
78 eListbox(eWidget *parent);
81 PSignal0<void> selectionChanged;
88 void setScrollbarMode(int mode);
89 void setWrapAround(bool);
91 void setContent(iListboxContent *content);
101 int getCurrentIndex();
102 void moveSelection(int how);
103 void moveSelectionTo(int index);
108 enum ListboxActions {
118 void setItemHeight(int h);
119 void setSelectionEnable(int en);
121 void setBackgroundColor(gRGB &col);
122 void setForegroundColor(gRGB &col);
123 void setBackgroundPicture(ePtr<gPixmap> &pixmap);
124 void setSelectionPicture(ePtr<gPixmap> &pixmap);
126 struct eListboxStyle *getLocalStyle(void);
128 /* entryAdded: an entry was added *before* the given index. it's index is the given number. */
129 void entryAdded(int index);
130 /* entryRemoved: an entry with the given index was removed. */
131 void entryRemoved(int index);
132 /* entryChanged: the entry with the given index was changed and should be redrawn. */
133 void entryChanged(int index);
134 /* the complete list changed. you should not attemp to keep the current index. */
135 void entryReset(bool cursorHome=true);
138 int event(int event, void *data=0, void *data2=0);
142 int m_scrollbar_mode, m_prev_scrollbar_page;
143 bool m_content_changed;
144 bool m_enabled_wrap_around;
146 int m_top, m_selected;
148 int m_items_per_page;
149 int m_selection_enabled;
150 ePtr<iListboxContent> m_content;
151 eSlider *m_scrollbar;
152 eListboxStyle m_style;