ui_pathsel.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 <dirent.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>

#include <gtk/gtk.h>

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

#include "ui_pathsel.h"

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


#define DEST_WIDTH 250
#define DEST_HEIGHT 210

#define RENAME_PRESS_DELAY 333	/* 1/3 second, to allow double clicks */

#define PATH_SEL_USE_HEADINGS FALSE

enum {
	FILTER_COLUMN_NAME = 0,
	FILTER_COLUMN_FILTER
};

typedef struct _Dest_Data Dest_Data;
struct _Dest_Data
{
	GtkWidget *d_view;
	GtkWidget *f_view;
	GtkWidget *entry;
	gchar *filter;
	gchar *path;

	GList *filter_list;
	GList *filter_text_list;
	GtkWidget *filter_combo;

	gint show_hidden;
	GtkWidget *hidden_button;

	GtkWidget *bookmark_list;

	GtkTreePath *right_click_path;

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

	GenericDialog *gd;	/* any open confirm dialogs ? */
};

typedef struct _DestDel_Data DestDel_Data;
struct _DestDel_Data
{
	Dest_Data *dd;
	gchar *path;
};


static void dest_view_delete_dlg_cancel(GenericDialog *gd, gpointer data);


/*
 *-----------------------------------------------------------------------------
 * (private)
 *-----------------------------------------------------------------------------
 */ 

static void dest_free_data(GtkWidget *widget, gpointer data)
{
	Dest_Data *dd = data;

	if (dd->gd)
		{
		GenericDialog *gd = dd->gd;
		dest_view_delete_dlg_cancel(dd->gd, dd->gd->data);
		generic_dialog_close(gd);
		}
	if (dd->right_click_path) gtk_tree_path_free(dd->right_click_path);

	g_free(dd->filter);
	g_free(dd->path);
	g_free(dd);
}

static gint dest_check_filter(const gchar *filter, const gchar *file)
{
	const gchar *f_ptr = filter;
	const gchar *strt_ptr;
	gint i;
	gint l;

	l = strlen(file);

	if (filter[0] == '*') return TRUE;
	while (f_ptr < filter + strlen(filter))
		{
		strt_ptr = f_ptr;
		i=0;
		while (*f_ptr != ';' && *f_ptr != '\0')
			{
			f_ptr++;
			i++;
			}
		if (*f_ptr != '\0' && f_ptr[1] == ' ') f_ptr++;	/* skip space immediately after separator */
		f_ptr++;
		if (l >= i && strncasecmp(file + l - i, strt_ptr, i) == 0) return TRUE;
		}
	return FALSE;
}

#ifndef CASE_SORT
#define CASE_SORT strcmp
#endif

static gint dest_sort_cb(void *a, void *b)
{
	return CASE_SORT((gchar *)a, (gchar *)b);
}

static gint is_hidden(const gchar *name)
{
	if (name[0] != '.') return FALSE;
	if (name[1] == '\0') return FALSE;
	if (name[1] == '.' && name[2] == '\0') return FALSE;
	return TRUE;
}

static void dest_populate(Dest_Data *dd, const gchar *path)
{
	DIR *dp;
	struct dirent *dir;
	struct stat ent_sbuf;
	GList *path_list = NULL;
	GList *file_list = NULL;
	GList *list;
	GtkListStore *store;
	gchar *pathl;

	if (!path) return;

	pathl = path_from_utf8(path);
	dp = opendir(pathl);
	if (!dp)
		{
		/* dir not found */
		g_free(pathl);
		return;
		}
	while ((dir = readdir(dp)) != NULL)
		{
		/* skips removed files */
		if (dir->d_ino > 0 && (dd->show_hidden || !is_hidden(dir->d_name)) )
			{
			gchar *name = dir->d_name;
			gchar *filepath = g_strconcat(pathl, "/", name, NULL);
			if (stat(filepath, &ent_sbuf) >= 0 && S_ISDIR(ent_sbuf.st_mode))
				{
				path_list = g_list_prepend(path_list, path_to_utf8(name));
				}
			else if (dd->f_view)
				{
				if (!dd->filter || (dd->filter && dest_check_filter(dd->filter, name)))
					file_list = g_list_prepend(file_list, path_to_utf8(name));
				}
			g_free(filepath);
			}
		}
	closedir(dp);
	g_free(pathl);

	path_list = g_list_sort(path_list, (GCompareFunc) dest_sort_cb);
	file_list = g_list_sort(file_list, (GCompareFunc) dest_sort_cb);

	store = GTK_LIST_STORE(gtk_tree_view_get_model(GTK_TREE_VIEW(dd->d_view)));
	gtk_list_store_clear(store);

	list = path_list;
	while (list)
		{
		GtkTreeIter iter;
		gchar *filepath;

		if (strcmp(list->data, ".") == 0)
			{
			filepath = g_strdup(path);
			}
		else if (strcmp(list->data, "..") == 0)
			{
			gchar *p;
			filepath = g_strdup(path);
			p = (gchar *)filename_from_path(filepath);
			if (p - 1 != filepath) p--;
			p[0] = '\0';
			}
		else
			{
			filepath = concat_dir_and_file(path, list->data);
			}
		
		gtk_list_store_append(store, &iter);
		gtk_list_store_set(store, &iter, 0, list->data, 1, filepath, -1);

		g_free(filepath);
		list = list->next;
		}

	path_list_free(path_list);


	if (dd->f_view)
		{
		store = GTK_LIST_STORE(gtk_tree_view_get_model(GTK_TREE_VIEW(dd->f_view)));
		gtk_list_store_clear(store);

		list = file_list;
		while (list)
        	        {
			GtkTreeIter iter;
			gchar *filepath;
			const gchar *name = list->data;

			filepath = concat_dir_and_file(path, name);
		
			gtk_list_store_append(store, &iter);
			gtk_list_store_set(store, &iter, 0, name, 1, filepath, -1);

			g_free(filepath);
			list = list->next;
			}

		path_list_free(file_list);
		}

	g_free(dd->path);
	dd->path = g_strdup(path);
}

static void dest_change_dir(Dest_Data *dd, const gchar *path, gint retain_name)
{
	gchar *old_name = NULL;
	gint s = 0;

	if (retain_name)
		{
		const gchar *buf = gtk_entry_get_text(GTK_ENTRY(dd->entry));
		if (!isdir(buf))
			{
			if (path && strcmp(path, "/") == 0)
				{
				old_name = g_strdup(filename_from_path(buf));
				}
			else
				{
				old_name = g_strconcat("/", filename_from_path(buf), NULL);
				s = 1;
				}
			}
		}

	gtk_entry_set_text(GTK_ENTRY(dd->entry), path);

	dest_populate(dd, path);

	/* remember filename */
	if (old_name)
		{
		gint pos = -1;
		gtk_editable_insert_text(GTK_EDITABLE(dd->entry), old_name, -1, &pos);
		gtk_editable_select_region(GTK_EDITABLE(dd->entry), strlen(path) + s, strlen(path) + strlen(old_name));
		g_free(old_name);
		}
}

/*
 *-----------------------------------------------------------------------------
 * drag and drop
 *-----------------------------------------------------------------------------
 */

enum {
	TARGET_URI_LIST,
	TARGET_TEXT_PLAIN
};

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


static void dest_dnd_set_data(GtkWidget *view,
			      GdkDragContext *context, GtkSelectionData *selection_data,
			      guint info, guint time, gpointer data)
{
	gchar *path = NULL;
	gchar *uri_text = NULL;
	GList *list = NULL;
	gint length = 0;
	GtkTreeModel *model;
	GtkTreeSelection *selection;
	GtkTreeIter iter;

	selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(view));
	if (!gtk_tree_selection_get_selected(selection, &model, &iter)) return;

	gtk_tree_model_get(model, &iter, 1, &path, -1);
	if (!path) return;

	list = g_list_append(list, path);

	switch (info)
		{
		case TARGET_URI_LIST:
			uri_text = uri_text_from_list(list, &length, FALSE);
			break;
		case TARGET_TEXT_PLAIN:
			uri_text = uri_text_from_list(list, &length, TRUE);
			break;
		}

	path_list_free(list);

	if (!uri_text) return;

	gtk_selection_data_set(selection_data, selection_data->target,
			       8, uri_text, length);
	g_free(uri_text);
}

static void dest_dnd_init(Dest_Data *dd)
{
	gtk_tree_view_enable_model_drag_source(GTK_TREE_VIEW(dd->d_view), GDK_BUTTON1_MASK,
					       dest_drag_types, dest_drag_types_n,
					       GDK_ACTION_COPY | GDK_ACTION_MOVE | GDK_ACTION_LINK | GDK_ACTION_ASK);
	g_signal_connect(G_OBJECT(dd->d_view), "drag_data_get",
			 G_CALLBACK(dest_dnd_set_data), dd);

	if (dd->f_view)
		{
		gtk_tree_view_enable_model_drag_source(GTK_TREE_VIEW(dd->f_view), GDK_BUTTON1_MASK,
						       dest_drag_types, dest_drag_types_n,
						       GDK_ACTION_COPY | GDK_ACTION_MOVE | GDK_ACTION_LINK | GDK_ACTION_ASK);
		g_signal_connect(G_OBJECT(dd->f_view), "drag_data_get",
				 G_CALLBACK(dest_dnd_set_data), dd);
		}
}


/*
 *-----------------------------------------------------------------------------
 * destination widget file management utils
 *-----------------------------------------------------------------------------
 */

static void dest_view_store_selection(Dest_Data *dd, GtkTreeView *view)
{
	GtkTreeModel *model;
	GtkTreeSelection *selection;
	GtkTreeIter iter;

	if (dd->right_click_path) gtk_tree_path_free(dd->right_click_path);
	dd->right_click_path = NULL;

	selection = gtk_tree_view_get_selection(view);
	if (!gtk_tree_selection_get_selected(selection, &model, &iter))
		{
		return;
		}

	dd->right_click_path = gtk_tree_model_get_path(model, &iter);
}

static gint dest_view_rename_cb(TreeEditData *ted, const gchar *old, const gchar *new, gpointer data)
{
	Dest_Data *dd = data;
	GtkTreeModel *model;
	GtkTreeIter iter;
	gchar *buf;
	gchar *old_path;
	gchar *new_path;

	model = gtk_tree_view_get_model(GTK_TREE_VIEW(ted->tree));
	gtk_tree_model_get_iter(model, &iter, dd->right_click_path);

	gtk_tree_model_get(model, &iter, 1, &old_path, -1);
	if (!old_path) return FALSE;

	buf = remove_level_from_path(old_path);
	new_path = concat_dir_and_file(buf, new);
	g_free(buf);

	if (isname(new_path))
		{
		buf = g_strdup_printf(_("A file with name %s already exists."), new);
		warning_dialog("Rename failed", buf, GTK_STOCK_DIALOG_INFO, dd->entry);
		g_free(buf);
		}
	else if (!rename_file(old_path, new_path))
		{
		buf = g_strdup_printf(_("Failed to rename %s to %s."), old, new);
		warning_dialog("Rename failed", buf, GTK_STOCK_DIALOG_ERROR, dd->entry);
		g_free(buf);
		}