widget.h

一个很有名的浏览器

/* $Id: widget.h,v 1.90.4.2 2005/04/05 21:04:19 jonas Exp $ */

#ifndef EL__BFU_WIDGET_H
#define EL__BFU_WIDGET_H

/* XXX: Include common definitions first */
#include "bfu/common.h"

#include "bfu/button.h"
#include "bfu/checkbox.h"
#include "bfu/group.h"
#include "bfu/inpfield.h"
#include "bfu/inphist.h"
#include "bfu/leds.h"
#include "bfu/listbox.h"
#include "bfu/msgbox.h"
#include "bfu/text.h"
#include "util/lists.h"
#include "util/box.h"

struct dialog_data;


struct widget_ops {
	/* XXX: Order matters here. --Zas */
	t_widget_handler *display;
	t_widget_handler *init;
	t_widget_handler *mouse;
	t_widget_handler *kbd;
	t_widget_handler *select;
	t_widget_handler *clear;
};


struct widget {
	struct widget_ops *ops;

	unsigned char *text;

	t_widget_handler *handler;

	void *data;
	int datalen;	/* 0 = no alloc/copy to cdata. */

	union {
		struct widget_info_checkbox checkbox;
		struct widget_info_field field;
		struct widget_info_listbox listbox;
		struct widget_info_button button;
		struct widget_info_text text;
	} info;

	enum widget_type type;
};

struct widget_data {
	struct widget *widget;
	unsigned char *cdata;

	struct box box;

	union {
		struct widget_data_info_field field;
		struct widget_data_info_checkbox checkbox;
		struct widget_data_info_text text;
	} info;
};

void display_widget(struct dialog_data *, struct widget_data *);

static inline int
widget_is_focusable(struct widget_data *widget_data)
{
	switch (widget_data->widget->type) {
		case WIDGET_LISTBOX: return 0;
		case WIDGET_TEXT: return text_is_scrollable(widget_data);
		default: return 1;
	}
}


#endif