ui_bookmark.c

Gqview,Linux下基于GTK+库写成的轻量级而能丰富的图像浏览程序。

/*
 * (SLIK) SimpLIstic sKin functions
 * (C) 2004 John Ellis
 *
 * Author: John Ellis
 *
 * This software is released under the GNU General Public License (GNU GPL).
 * Please read the included file COPYING for more information.
 * This software comes with no warranty of any kind, use at your own risk!
 */

#ifdef HAVE_CONFIG_H
#  include "config.h"
#endif
#include "intl.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <gtk/gtk.h>

#include <gdk/gdkkeysyms.h> /* for key values */

#include "ui_bookmark.h"

#include "ui_fileops.h"
#include "ui_menu.h"
#include "ui_misc.h"
#include "ui_utildlg.h"
#include "ui_tabcomp.h"


/*
 *-----------------------------------------------------------------------------
 * history lists
 *-----------------------------------------------------------------------------
 */

#define HISTORY_DEFAULT_KEY_COUNT 16


typedef struct _HistoryData HistoryData;
struct _HistoryData
{
	gchar *key;
	GList *list;
};

static GList *history_list = NULL;


static gchar *quoted_from_text(const gchar *text)
{
	const gchar *ptr;
	gint c = 0;
	gint l = strlen(text);

	if (l == 0) return NULL;

	while (c < l && text[c] !='"') c++;
	if (text[c] == '"')
		{
		gint e;
		c++;
		ptr = text + c;
		e = c;
		while (e < l && text[e] !='"') e++;
		if (text[e] == '"')
			{
			if (e - c > 0)
				{
				return g_strndup(ptr, e - c);
				}
			}
		}
	return NULL;
}

gint history_list_load(const gchar *path)
{
	FILE *f;
	gchar *key = NULL;
	gchar s_buf[1024];
	gchar *pathl;

	pathl = path_from_utf8(path);
	f = fopen(pathl, "r");
	g_free(pathl);
	if (!f) return FALSE;

	/* first line must start with History comment */
	if (!fgets(s_buf,1024,f) ||
	    strncmp(s_buf, "#History", 8) != 0)
		{
		fclose(f);
		return FALSE;
		}

	while (fgets(s_buf,1024,f))
		{
		if (s_buf[0]=='#') continue;
		if (s_buf[0]=='[')
			{
			gint c;
			gchar *ptr;

			ptr = s_buf + 1;
			c = 0;
			while(ptr[c] != ']' && ptr[c] != '\n' && ptr[c] != '\0') c++;

			g_free(key);
			key = g_strndup(ptr, c);
			}
		else
			{
			gchar *value;

			value = quoted_from_text(s_buf);
			if (value && key)
				{
				history_list_add_to_key(key, value, 0);
				}
			g_free(value);
			}
		}

	fclose(f);

	g_free(key);

	return TRUE;
}

gint history_list_save(const gchar *path)
{
	FILE *f;
	GList *list;
	gchar *pathl;

	pathl = path_from_utf8(path);
	f = fopen(pathl, "w");
	g_free(pathl);
	if (!f)
		{
		gchar *buf;

		buf = g_strdup_printf(_("Unable to write history lists to: %s\n"), path);
		print_term(buf);
		g_free(buf);

		return FALSE;
		}

	fprintf(f, "#History lists\n");
	fprintf(f, "\n");

	list = g_list_last(history_list);
	while(list)
		{
		HistoryData *hd;
		GList *work;

		hd = list->data;
		list = list->prev;

		fprintf(f, "[%s]\n", hd->key);

		/* save them inverted (oldest to newest)
		 * so that when reading they are added correctly
		 */
		work = g_list_last(hd->list);
		while(work)
			{
			fprintf(f, "\"%s\"\n", (gchar *)work->data);
			work = work->prev;
			}
		fprintf(f, "\n");
		}

	fprintf(f, "#end\n");

	fclose(f);

	return TRUE;
}

static void history_list_free(HistoryData *hd)
{
	GList *work;

	if (!hd) return;

	work = hd->list;
	while(work)
		{
		g_free(work->data);
		work = work->next;
		}

	g_free(hd->key);
	g_free(hd);
}

static HistoryData *history_list_find_by_key(const gchar* key)
{
	GList *work = history_list;

	if (!key) return NULL;

	while (work)
		{
		HistoryData *hd = work->data;
		if (strcmp(hd->key, key) == 0) return hd;
		work = work->next;
		}
	return NULL;
}

const gchar *history_list_find_last_path_by_key(const gchar* key)
{
	HistoryData *hd;

	hd = history_list_find_by_key(key);
	if (!hd || !hd->list) return NULL;

	return hd->list->data;
}

void history_list_free_key(const gchar *key)
{
	HistoryData *hd;
	hd = history_list_find_by_key(key);
	if (!hd) return;

	history_list = g_list_remove(history_list, hd);
	history_list_free(hd);
}

void history_list_add_to_key(const gchar *key, const gchar *path, gint max)
{
	HistoryData *hd;
	GList *work;

	if (!key || !path) return;

	hd = history_list_find_by_key(key);
	if (!hd)
		{
		hd = g_new(HistoryData, 1);
		hd->key = g_strdup(key);
		hd->list = NULL;
		history_list = g_list_prepend(history_list, hd);
		}

	/* if already in the list, simply move it to the top */
	work = hd->list;
	while(work)
		{
		gchar *buf = work->data;
		work = work->next;
		if (strcmp(buf, path) == 0)
			{
			hd->list = g_list_remove(hd->list, buf);
			hd->list = g_list_prepend(hd->list, buf);
			return;
			}
		}

	hd->list = g_list_prepend(hd->list, g_strdup(path));

	if (max == -1) max = HISTORY_DEFAULT_KEY_COUNT;
	if (max > 0)
		{
		while(hd->list && g_list_length(hd->list) > max)
			{
			GList *work = g_list_last(hd->list);
			gchar *buf = work->data;
			hd->list = g_list_remove(hd->list, buf);
			g_free(buf);
			}
		}
}

void history_list_item_change(const gchar *key, const gchar *oldpath, const gchar *newpath)
{
	HistoryData *hd;
	GList *work;

	if (!oldpath) return;
	hd = history_list_find_by_key(key);
	if (!hd) return;

	work = hd->list;
	while(work)
		{
		gchar *buf = work->data;
		if (strcmp(buf, oldpath) == 0)
			{
			if (newpath)
				{
				work->data = g_strdup(newpath);
				}
			else
				{
				hd->list = g_list_remove(hd->list, buf);
				}
			g_free(buf);
			return;
			}
		work = work->next;
		}
}

void history_list_item_move(const gchar *key, const gchar *path, gint direction)
{
	HistoryData *hd;
	GList *work;
	gint p = 0;

	if (!path) return;
	hd = history_list_find_by_key(key);
	if (!hd) return;

	work = hd->list;
	while (work)
		{
		gchar *buf = work->data;
		if (strcmp(buf, path) == 0)
			{
			p += direction;
			if (p < 0) return;
			hd->list = g_list_remove(hd->list, buf);
			hd->list = g_list_insert(hd->list, buf, p);
			return;
			}
		work = work->next;
		p++;
		}
}

void history_list_item_remove(const gchar *key, const gchar *path)
{
	history_list_item_change(key, path, NULL);
}

GList *history_list_get_by_key(const gchar *key)
{
	HistoryData *hd;

	hd = history_list_find_by_key(key);
	if (!hd) return NULL;

	return hd->list;
}

/*
 *-----------------------------------------------------------------------------
 * bookmarks
 *-----------------------------------------------------------------------------
 */

#define BOOKMARK_DATA_KEY "bookmarkdata"
#define MARKER_PATH "[path]"
#define MARKER_ICON "[icon]"

typedef struct _BookMarkData BookMarkData;
typedef struct _BookButtonData BookButtonData;
typedef struct _BookPropData BookPropData;

struct _BookMarkData
{
	GtkWidget *widget;
	GtkWidget *box;
	gchar *key;

	void (*select_func)(const gchar *path, gpointer data);
	gpointer select_data;

	gint no_defaults;
	gint editable;

	BookButtonData *active_button;
};

struct _BookButtonData
{
	GtkWidget *button;
	GtkWidget *image;
	GtkWidget *label;

	gchar *key;
	gchar *name;
	gchar *path;
	gchar *icon;
	gchar *parent;
};

struct _BookPropData
{
	GtkWidget *name_entry;
	GtkWidget *path_entry;
	GtkWidget *icon_entry;

	BookButtonData *bb;
};

enum {
	TARGET_URI_LIST,
	TARGET_X_URL,
	TARGET_TEXT_PLAIN
};

static GtkTargetEntry bookmark_drop_types[] = {
	{ "text/uri-list", 0, TARGET_URI_LIST },
	{ "x-url/http",    0, TARGET_X_URL },
	{ "_NETSCAPE_URL", 0, TARGET_X_URL }
};
#define bookmark_drop_types_n 3

static GtkTargetEntry bookmark_drag_types[] = {
	{ "text/uri-list", 0, TARGET_URI_LIST },
	{ "text/plain",    0, TARGET_TEXT_PLAIN }
};
#define bookmark_drag_types_n 2


static GList *bookmark_widget_list = NULL;
static GList *bookmark_default_list = NULL;


static void bookmark_populate_all(const gchar *key);


static BookButtonData *bookmark_from_string(const gchar *text)
{
	BookButtonData *b;
	const gchar *path_ptr;
	const gchar *icon_ptr;

	b = g_new0(BookButtonData, 1);

	if (!text)
		{
		b->name = g_strdup(_("New Bookmark"));
		b->path = g_strdup(homedir());
		b->key = NULL;
		return b;
		}

	b->key = g_strdup(text);

	path_ptr = strstr(text, MARKER_PATH);
	icon_ptr = strstr(text, MARKER_ICON);

	if (path_ptr && icon_ptr && icon_ptr < path_ptr)
		{
		printf("warning, bookmark icon must be after path\n");
		return NULL;
		}

	if (path_ptr)
		{
		gint l;

		l = path_ptr - text;
		b->name = g_strndup(text, l);
		path_ptr += strlen(MARKER_PATH);
		if (icon_ptr)
			{
			l = icon_ptr - path_ptr;
			b->path = g_strndup(path_ptr, l);
			}
		else
			{
			b->path = g_strdup(path_ptr);
			}
		}
	else
		{
		b->name = g_strdup(text);
		b->path = g_strdup("");
		}

	if (icon_ptr)
		{
		icon_ptr += strlen(MARKER_ICON);
		b->icon = g_strdup(icon_ptr);
		}

	return b;
}

static void bookmark_free(BookButtonData *b)
{
	if (!b) return;

	g_free(b->name);
	g_free(b->path);