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// "$Id: Browser.h 6077 2008-03-21 00:14:56Z fabien $"
//
// Copyright 2006 by Bill Spitzak and others.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA.
//
// Please report all bugs and problems to "fltk-bugs@fltk.org".
#ifndef fltk_Browser_h
#define fltk_Browser_h
#include "Menu.h"
#include "Scrollbar.h"
namespace fltk {
class FL_API Browser : public Menu {
public:
int handle(int);
void layout();
void draw();
Browser(int X,int Y,int W,int H,const char*l=0);
static NamedStyle* default_style;
~Browser();
enum { //<! values for type()
IS_MULTI = 1,
NORMAL = GROUP_TYPE, //!< means single selection can be achieved by user
MULTI = GROUP_TYPE+1 //!< means multiple selection can be achieved by user
};
enum { // value for selected_column
NO_COLUMN_SELECTED = -1 //!< means that no column has been selected by user
};
class FL_API Mark {
friend class Browser;
unsigned level; // depth in hierarchy of the item
unsigned open_level; // depth of highest closed parent
int position; // distance in pixels from top of browser
unsigned indexes_size; // allocated size
int* indexes; // array of indexes
int index0; // used as *indexes if indexes_size==1
public:
Mark() {
level = 0;
open_level = 0;
position = 0;
indexes_size = 1;
indexes = &index0;
index0 = 0;
}
Mark(const Mark&);
~Mark() {
if (indexes != &index0) delete[] indexes;
}
const Mark& operator=(const Mark&);
int compare(const Mark& mark2) const;
void unset() {indexes[0] = -1;}
bool is_set() const {return indexes[0] >= 0;}
};
enum linepos { //!< Argument to make_item_visible()
NOSCROLL, //!< move as little as possible so item is visible
TOP, //!< position current item to top
MIDDLE, //!< position current item to middle
BOTTOM //!< position current item to bottom
};
int width() const {return width_;}
int height() const {return height_;}
int box_width() const {return interior.w();}
int box_height() const {return interior.h();}
int xposition() const {return xposition_;}
void xposition(int);
int yposition() const {return yposition_;}
void yposition(int);
bool indented() const {return indented_;}
void indented(bool v) {indented_ = v;}
Scrollbar scrollbar;
Scrollbar hscrollbar;
Widget* goto_top();
Widget* goto_focus() {return goto_mark(FOCUS);}
Widget* goto_position(int y);
Widget* goto_index(const int* indexes, unsigned level);
Widget* goto_index(int);
Widget* goto_index(int,int,int=-1,int=-1,int=-1);
Widget* goto_mark(const Mark&); // set HERE to mark
Widget* next();
Widget* next_visible();
Widget* previous_visible();
bool at_mark(const Mark& mark) const {return !HERE.compare(mark);}
int compare_to_mark(const Mark& mark) const {return HERE.compare(mark);}
bool item_is_visible() const;
bool item_is_parent() const;
bool item_is_open() const;
int item_h() const;
bool set_focus();
void set_mark(Mark& dest) const {dest = HERE;}
void set_mark_to_focus(Mark& dest) const {dest = FOCUS;}
bool select(Widget*e, int val, int do_callback=0);
bool set_item_selected(bool value = true, int do_callback = 0);
bool select_only_this(int do_callback = 0);
bool deselect(int do_callback = 0);
bool make_item_visible(linepos = NOSCROLL);
void damage_item() {damage_item(HERE);}
void damage_item(const Mark&); // make this item redraw
bool set_item_opened(bool);
bool set_item_visible(bool);
int current_level() const {return HERE.level;}
const int* current_index() const {return HERE.indexes;}
int current_position() const {return HERE.position;}
int focus_level() const {return FOCUS.level;}
const int* focus_index() const {return FOCUS.indexes;}
int focus_position() const {return FOCUS.position;}
// Maybe these should be moved to base Menu class:
const int *column_widths() const { return column_widths_p; }
void column_widths(const int *pWidths);
const char **column_labels() const { return column_labels_; }
void column_labels(const char **pLabels);
int selected_column() { return selected_column_; }
int set_column_start(int column, int x);
Widget *header(int col) { if(col<0 || col>=nHeader) return 0; return header_[col]; }
int nheader() const { return nHeader; }
// Convienence functions for flat browsers:
void value(int v) {goto_index(v); set_focus();}
int value() const {return FOCUS.indexes[0];}
bool select(int line, bool value = true);
bool selected(int line);
int topline() const {return FIRST_VISIBLE.indexes[0];}
void topline(int line) {goto_index(line); make_item_visible(TOP);}
void bottomline(int line) {goto_index(line); make_item_visible(BOTTOM);}
void middleline(int line) {goto_index(line); make_item_visible();}
bool displayed(int line);
bool display(int line, bool value = true);
bool display_lines() const;
void display_lines(bool display);
int load(const char *filename);
int multi() const {return type()&IS_MULTI;}
const Symbol* leaf_symbol() const {return leaf_symbol_;}
void leaf_symbol(const Symbol* s) {leaf_symbol_ = s;}
const Symbol* group_symbol() const {return group_symbol_;}
void group_symbol(const Symbol* s) {group_symbol_ = s;}
protected:
void handle_callback(int doit); // defines how cb are handled in the browser
private:
bool displaylines_;
bool indented_;
const int *column_widths_; // original column widths
int *column_widths_i; // original column widths after user interaction
int *column_widths_p; // actual column widths
const char **column_labels_;
int xposition_, yposition_;
int width_, height_;
int scrolldx, scrolldy;
static void hscrollbar_cb(Widget*, void*);
static void scrollbar_cb(Widget*, void*);
void draw_item(int);
void draw_clip(const Rectangle&);
static void draw_clip_cb(void*,const Rectangle&);
Rectangle interior; // inside box edges and scrollbars
void set_belowmouse();
void clear_belowmouse();
Widget **header_;
int nHeader, nColumn, selected_column_;
void set_level(unsigned);
enum {NUM_REDRAW = 2};
Mark HERE, FOCUS, FIRST_VISIBLE, REDRAW[NUM_REDRAW], OPEN, BELOWMOUSE;
Widget* goto_visible_focus(); // set HERE to focus if visible
int siblings; // # of children of parent of HERE item
static void column_click_cb_(Widget*, void*);
const Symbol* leaf_symbol_;
const Symbol* group_symbol_;
};
}
#endif
//
// End of "$Id: Browser.h 6077 2008-03-21 00:14:56Z fabien $".
//
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