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gtk2/gtk/gtkfilechooserentry.c
Benjamin Otte 6e7b2de21e filechooserentry: Simplify append_common_prefix() 
Now that we don't need to know anymore why insertion failed, we can
simplify the append function quite a lot.

A simple rule now: If we did not insert anything, beep.
2011-12-16 20:09:13 +01:00

1342 lines
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/* GTK - The GIMP Toolkit
* gtkfilechooserentry.c: Entry with filename completion
* Copyright (C) 2003, Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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.
*/
#include "config.h"
#include "gtkfilechooserentry.h"
#include <string.h>
#include "gtkcelllayout.h"
#include "gtkcellrenderertext.h"
#include "gtkentry.h"
#include "gtkfilesystemmodel.h"
#include "gtklabel.h"
#include "gtkmain.h"
#include "gtksizerequest.h"
#include "gtkwindow.h"
#include "gtkintl.h"
typedef struct _GtkFileChooserEntryClass GtkFileChooserEntryClass;
#define GTK_FILE_CHOOSER_ENTRY_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_FILE_CHOOSER_ENTRY, GtkFileChooserEntryClass))
#define GTK_IS_FILE_CHOOSER_ENTRY_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_FILE_CHOOSER_ENTRY))
#define GTK_FILE_CHOOSER_ENTRY_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_FILE_CHOOSER_ENTRY, GtkFileChooserEntryClass))
struct _GtkFileChooserEntryClass
{
GtkEntryClass parent_class;
};
/* Action to take when the current folder finishes loading (for explicit or automatic completion) */
typedef enum {
LOAD_COMPLETE_NOTHING,
LOAD_COMPLETE_EXPLICIT_COMPLETION
} LoadCompleteAction;
typedef enum
{
REFRESH_OK,
REFRESH_INVALID_INPUT,
REFRESH_INCOMPLETE_HOSTNAME,
REFRESH_NONEXISTENT,
REFRESH_NOT_LOCAL
} RefreshStatus;
struct _GtkFileChooserEntry
{
GtkEntry parent_instance;
GtkFileChooserAction action;
GFile *base_folder;
GFile *current_folder_file;
gchar *dir_part;
gchar *file_part;
gint file_part_pos;
LoadCompleteAction load_complete_action;
GtkTreeModel *completion_store;
guint current_folder_loaded : 1;
guint in_change : 1;
guint eat_tabs : 1;
guint local_only : 1;
};
enum
{
DISPLAY_NAME_COLUMN,
FULL_PATH_COLUMN,
FILE_COLUMN,
N_COLUMNS
};
static void gtk_file_chooser_entry_finalize (GObject *object);
static void gtk_file_chooser_entry_dispose (GObject *object);
static void gtk_file_chooser_entry_grab_focus (GtkWidget *widget);
static gboolean gtk_file_chooser_entry_key_press_event (GtkWidget *widget,
GdkEventKey *event);
static gboolean gtk_file_chooser_entry_focus_out_event (GtkWidget *widget,
GdkEventFocus *event);
static void gtk_file_chooser_entry_activate (GtkEntry *entry);
#ifdef G_OS_WIN32
static gint insert_text_callback (GtkFileChooserEntry *widget,
const gchar *new_text,
gint new_text_length,
gint *position,
gpointer user_data);
static void delete_text_callback (GtkFileChooserEntry *widget,
gint start_pos,
gint end_pos,
gpointer user_data);
#endif
static gboolean match_selected_callback (GtkEntryCompletion *completion,
GtkTreeModel *model,
GtkTreeIter *iter,
GtkFileChooserEntry *chooser_entry);
static gboolean completion_match_func (GtkEntryCompletion *comp,
const char *key,
GtkTreeIter *iter,
gpointer data);
static RefreshStatus refresh_current_folder_and_file_part (GtkFileChooserEntry *chooser_entry,
const char *text);
static void finished_loading_cb (GtkFileSystemModel *model,
GError *error,
GtkFileChooserEntry *chooser_entry);
G_DEFINE_TYPE (GtkFileChooserEntry, _gtk_file_chooser_entry, GTK_TYPE_ENTRY)
static void
gtk_file_chooser_entry_dispatch_properties_changed (GObject *object,
guint n_pspecs,
GParamSpec **pspecs)
{
GtkFileChooserEntry *chooser_entry = GTK_FILE_CHOOSER_ENTRY (object);
GtkEditable *editable = GTK_EDITABLE (object);
guint i;
G_OBJECT_CLASS (_gtk_file_chooser_entry_parent_class)->dispatch_properties_changed (object, n_pspecs, pspecs);
/* What we are after: The text in front of the cursor was modified.
* Unfortunately, there's no other way to catch this. */
if (chooser_entry->in_change)
return;
for (i = 0; i < n_pspecs; i++)
{
if (pspecs[i]->name == I_("cursor-position") ||
pspecs[i]->name == I_("selection-bound") ||
pspecs[i]->name == I_("text"))
{
char *text;
int start, end;
chooser_entry->load_complete_action = LOAD_COMPLETE_NOTHING;
gtk_editable_get_selection_bounds (editable, &start, &end);
text = gtk_editable_get_chars (editable, 0, MIN (start, end));
refresh_current_folder_and_file_part (chooser_entry, text);
g_free (text);
break;
}
}
}
static void
_gtk_file_chooser_entry_class_init (GtkFileChooserEntryClass *class)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (class);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
GtkEntryClass *entry_class = GTK_ENTRY_CLASS (class);
gobject_class->finalize = gtk_file_chooser_entry_finalize;
gobject_class->dispose = gtk_file_chooser_entry_dispose;
gobject_class->dispatch_properties_changed = gtk_file_chooser_entry_dispatch_properties_changed;
widget_class->grab_focus = gtk_file_chooser_entry_grab_focus;
widget_class->key_press_event = gtk_file_chooser_entry_key_press_event;
widget_class->focus_out_event = gtk_file_chooser_entry_focus_out_event;
entry_class->activate = gtk_file_chooser_entry_activate;
}
static void
_gtk_file_chooser_entry_init (GtkFileChooserEntry *chooser_entry)
{
GtkEntryCompletion *comp;
GtkCellRenderer *cell;
chooser_entry->local_only = TRUE;
chooser_entry->base_folder = g_file_new_for_path (g_get_home_dir ());
g_object_set (chooser_entry, "truncate-multiline", TRUE, NULL);
comp = gtk_entry_completion_new ();
gtk_entry_completion_set_popup_single_match (comp, FALSE);
/* see docs for gtk_entry_completion_set_text_column() */
g_object_set (comp, "text-column", FULL_PATH_COLUMN, NULL);
gtk_entry_completion_set_match_func (comp,
completion_match_func,
chooser_entry,
NULL);
cell = gtk_cell_renderer_text_new ();
gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (comp),
cell, TRUE);
gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (comp),
cell,
"text", DISPLAY_NAME_COLUMN);
g_signal_connect (comp, "match-selected",
G_CALLBACK (match_selected_callback), chooser_entry);
gtk_entry_set_completion (GTK_ENTRY (chooser_entry), comp);
g_object_unref (comp);
#ifdef G_OS_WIN32
g_signal_connect (chooser_entry, "insert-text",
G_CALLBACK (insert_text_callback), NULL);
g_signal_connect (chooser_entry, "delete-text",
G_CALLBACK (delete_text_callback), NULL);
#endif
}
static void
gtk_file_chooser_entry_finalize (GObject *object)
{
GtkFileChooserEntry *chooser_entry = GTK_FILE_CHOOSER_ENTRY (object);
g_object_unref (chooser_entry->base_folder);
if (chooser_entry->current_folder_file)
g_object_unref (chooser_entry->current_folder_file);
g_free (chooser_entry->dir_part);
g_free (chooser_entry->file_part);
G_OBJECT_CLASS (_gtk_file_chooser_entry_parent_class)->finalize (object);
}
static void
discard_loading_and_current_folder_file (GtkFileChooserEntry *chooser_entry)
{
if (chooser_entry->current_folder_file)
{
g_object_unref (chooser_entry->current_folder_file);
chooser_entry->current_folder_file = NULL;
}
}
static void
gtk_file_chooser_entry_dispose (GObject *object)
{
GtkFileChooserEntry *chooser_entry = GTK_FILE_CHOOSER_ENTRY (object);
discard_loading_and_current_folder_file (chooser_entry);
if (chooser_entry->completion_store)
{
g_object_unref (chooser_entry->completion_store);
chooser_entry->completion_store = NULL;
}
G_OBJECT_CLASS (_gtk_file_chooser_entry_parent_class)->dispose (object);
}
/* Match functions for the GtkEntryCompletion */
static gboolean
match_selected_callback (GtkEntryCompletion *completion,
GtkTreeModel *model,
GtkTreeIter *iter,
GtkFileChooserEntry *chooser_entry)
{
char *path;
gtk_tree_model_get (model, iter,
FULL_PATH_COLUMN, &path,
-1);
/* We don't set in_change here as we want to update the current_folder
* variable */
gtk_editable_delete_text (GTK_EDITABLE (chooser_entry),
0,
gtk_editable_get_position (GTK_EDITABLE (chooser_entry)));
gtk_editable_insert_text (GTK_EDITABLE (chooser_entry),
path,
0,
NULL);
g_free (path);
return TRUE;
}
/* Match function for the GtkEntryCompletion */
static gboolean
completion_match_func (GtkEntryCompletion *comp,
const char *key_unused,
GtkTreeIter *iter,
gpointer data)
{
GtkFileChooserEntry *chooser_entry;
char *name = NULL;
gboolean result;
char *norm_file_part;
char *norm_name;
chooser_entry = GTK_FILE_CHOOSER_ENTRY (data);
/* We ignore the key because it is the contents of the entry. Instead, we
* just use our precomputed file_part.
*/
if (!chooser_entry->file_part)
{
return FALSE;
}
gtk_tree_model_get (chooser_entry->completion_store, iter, DISPLAY_NAME_COLUMN, &name, -1);
if (!name)
{
return FALSE; /* Uninitialized row, ugh */
}
/* If we have an empty file_part, then we're at the root of a directory. In
* that case, we want to match all non-dot files. We might want to match
* dot_files too if show_hidden is TRUE on the fileselector in the future.
*/
/* Additionally, support for gnome .hidden files would be sweet, too */
if (chooser_entry->file_part[0] == '\000')
{
if (name[0] == '.')
result = FALSE;
else
result = TRUE;
g_free (name);
return result;
}
norm_file_part = g_utf8_normalize (chooser_entry->file_part, -1, G_NORMALIZE_ALL);
norm_name = g_utf8_normalize (name, -1, G_NORMALIZE_ALL);
#ifdef G_PLATFORM_WIN32
{
gchar *temp;
temp = norm_file_part;
norm_file_part = g_utf8_casefold (norm_file_part, -1);
g_free (temp);
temp = norm_name;
norm_name = g_utf8_casefold (norm_name, -1);
g_free (temp);
}
#endif
result = (strncmp (norm_file_part, norm_name, strlen (norm_file_part)) == 0);
g_free (norm_file_part);
g_free (norm_name);
g_free (name);
return result;
}
static void
clear_completions (GtkFileChooserEntry *chooser_entry)
{
chooser_entry->load_complete_action = LOAD_COMPLETE_NOTHING;
}
static void
beep (GtkFileChooserEntry *chooser_entry)
{
gtk_widget_error_bell (GTK_WIDGET (chooser_entry));
}
static gboolean
is_valid_scheme_character (char c)
{
return g_ascii_isalnum (c) || c == '+' || c == '-' || c == '.';
}
static gboolean
has_uri_scheme (const char *str)
{
const char *p;
p = str;
if (!is_valid_scheme_character (*p))
return FALSE;
do
p++;
while (is_valid_scheme_character (*p));
return (strncmp (p, "://", 3) == 0);
}
static GFile *
gtk_file_chooser_get_file_for_text (GtkFileChooserEntry *chooser_entry,
const gchar *str)
{
GFile *file;
if (str[0] == '~' || g_path_is_absolute (str) || has_uri_scheme (str))
file = g_file_parse_name (str);
else
file = g_file_resolve_relative_path (chooser_entry->base_folder, str);
return file;
}
static GFile *
gtk_file_chooser_get_directory_for_text (GtkFileChooserEntry *chooser_entry,
const char * text)
{
GFile *file, *parent;
file = gtk_file_chooser_get_file_for_text (chooser_entry, text);
if (text[0] == 0 || text[strlen (text) - 1] == G_DIR_SEPARATOR)
return file;
parent = g_file_get_parent (file);
g_object_unref (file);
return parent;
}
static gboolean
gtk_file_chooser_entry_parse (GtkFileChooserEntry *chooser_entry,
const gchar *str,
GFile **folder,
gchar **file_part,
GError **error)
{
GFile *file;
gboolean result = FALSE;
gboolean is_dir = FALSE;
gchar *last_slash = NULL;
if (str && *str)
is_dir = (str [strlen (str) - 1] == G_DIR_SEPARATOR);
last_slash = strrchr (str, G_DIR_SEPARATOR);
file = gtk_file_chooser_get_file_for_text (chooser_entry, str);
if (g_file_equal (chooser_entry->base_folder, file))
{
/* this is when user types '.', could be the
* beginning of a hidden file, ./ or ../
*/
*folder = g_object_ref (file);
*file_part = g_strdup (str);
result = TRUE;
}
else if (is_dir)
{
/* it's a dir, or at least it ends with the dir separator */
*folder = g_object_ref (file);
*file_part = g_strdup ("");
result = TRUE;
}
else
{
GFile *parent_file;
parent_file = g_file_get_parent (file);
if (!parent_file)
{
g_set_error (error,
GTK_FILE_CHOOSER_ERROR,
GTK_FILE_CHOOSER_ERROR_NONEXISTENT,
"Could not get parent file");
*folder = NULL;
*file_part = NULL;
}
else
{
*folder = parent_file;
result = TRUE;
if (last_slash)
*file_part = g_strdup (last_slash + 1);
else
*file_part = g_strdup (str);
}
}
g_object_unref (file);
return result;
}
/* Determines if the completion model has entries with a common prefix relative
* to the current contents of the entry. Also, if there's one and only one such
* path, stores it in unique_path_ret.
*/
static gboolean
find_common_prefix (GtkFileChooserEntry *chooser_entry,
gchar **common_prefix_ret,
GFile **unique_file_ret,
gboolean *is_complete_not_unique_ret,
gboolean *prefix_expands_the_file_part_ret,
GError **error)
{
GtkEditable *editable;
GtkTreeIter iter;
gboolean parsed;
gboolean valid;
char *text_up_to_cursor;
GFile *parsed_folder_file;
char *parsed_file_part;
*common_prefix_ret = NULL;
*unique_file_ret = NULL;
*is_complete_not_unique_ret = FALSE;
*prefix_expands_the_file_part_ret = FALSE;
editable = GTK_EDITABLE (chooser_entry);
text_up_to_cursor = gtk_editable_get_chars (editable, 0, gtk_editable_get_position (editable));
parsed = gtk_file_chooser_entry_parse (chooser_entry,
text_up_to_cursor,
&parsed_folder_file,
&parsed_file_part,
error);
g_free (text_up_to_cursor);
if (!parsed)
return FALSE;
g_assert (parsed_folder_file != NULL
&& g_file_equal (parsed_folder_file, chooser_entry->current_folder_file));
g_object_unref (parsed_folder_file);
/* First pass: find the common prefix */
valid = gtk_tree_model_get_iter_first (chooser_entry->completion_store, &iter);
while (valid)
{
gchar *display_name;
GFile *file;
gtk_tree_model_get (chooser_entry->completion_store,
&iter,
DISPLAY_NAME_COLUMN, &display_name,
FILE_COLUMN, &file,
-1);
if (g_str_has_prefix (display_name, parsed_file_part))
{
if (!*common_prefix_ret)
{
*common_prefix_ret = g_strdup (display_name);
*unique_file_ret = g_object_ref (file);
}
else
{
gchar *p = *common_prefix_ret;
const gchar *q = display_name;
while (*p && *p == *q)
{
p++;
q++;
}
*p = '\0';
if (*unique_file_ret)
{
g_object_unref (*unique_file_ret);
*unique_file_ret = NULL;
}
}
}
g_free (display_name);
g_object_unref (file);
valid = gtk_tree_model_iter_next (chooser_entry->completion_store, &iter);
}
/* Second pass: see if the prefix we found is a complete match */
if (*common_prefix_ret != NULL)
{
valid = gtk_tree_model_get_iter_first (chooser_entry->completion_store, &iter);
while (valid)
{
gchar *display_name;
int len;
gtk_tree_model_get (chooser_entry->completion_store,
&iter,
DISPLAY_NAME_COLUMN, &display_name,
-1);
len = strlen (display_name);
g_assert (len > 0);
if (G_IS_DIR_SEPARATOR (display_name[len - 1]))
len--;
if (*unique_file_ret == NULL && strncmp (*common_prefix_ret, display_name, len) == 0)
*is_complete_not_unique_ret = TRUE;
g_free (display_name);
valid = gtk_tree_model_iter_next (chooser_entry->completion_store, &iter);
}
/* Finally: Did we generate a new completion, or was the user's input already completed as far as it could go? */
*prefix_expands_the_file_part_ret = g_utf8_strlen (*common_prefix_ret, -1) > g_utf8_strlen (parsed_file_part, -1);
}
g_free (parsed_file_part);
return TRUE;
}
/* Finds a common prefix based on the contents of the entry
* and mandatorily appends it
*/
static void
explicitly_complete (GtkFileChooserEntry *chooser_entry)
{
gchar *common_prefix;
GFile *unique_file;
gboolean is_complete_not_unique;
gboolean prefix_expands_the_file_part;
gint cursor_pos;
gint pos;
clear_completions (chooser_entry);
if (chooser_entry->completion_store == NULL
|| !find_common_prefix (chooser_entry, &common_prefix, &unique_file, &is_complete_not_unique, &prefix_expands_the_file_part, NULL)
|| !common_prefix
|| !prefix_expands_the_file_part)
{
beep (chooser_entry);
return;
}
cursor_pos = gtk_editable_get_position (GTK_EDITABLE (chooser_entry));
pos = chooser_entry->file_part_pos;
chooser_entry->in_change = TRUE;
gtk_editable_delete_text (GTK_EDITABLE (chooser_entry),
pos, cursor_pos);
gtk_editable_insert_text (GTK_EDITABLE (chooser_entry),
common_prefix, -1,
&pos);
chooser_entry->in_change = FALSE;
gtk_editable_set_position (GTK_EDITABLE (chooser_entry), pos);
}
static void
gtk_file_chooser_entry_grab_focus (GtkWidget *widget)
{
GTK_WIDGET_CLASS (_gtk_file_chooser_entry_parent_class)->grab_focus (widget);
_gtk_file_chooser_entry_select_filename (GTK_FILE_CHOOSER_ENTRY (widget));
}
static void
start_explicit_completion (GtkFileChooserEntry *chooser_entry)
{
RefreshStatus status;
gboolean is_error;
char *text;
text = gtk_editable_get_chars (GTK_EDITABLE (chooser_entry),
0, gtk_editable_get_position (GTK_EDITABLE (chooser_entry)));
status = refresh_current_folder_and_file_part (chooser_entry, text);
g_free (text);
is_error = FALSE;
switch (status)
{
case REFRESH_OK:
g_assert (chooser_entry->current_folder_file != NULL);
if (chooser_entry->current_folder_loaded)
explicitly_complete (chooser_entry);
else
{
chooser_entry->load_complete_action = LOAD_COMPLETE_EXPLICIT_COMPLETION;
}
break;
case REFRESH_INVALID_INPUT:
is_error = TRUE;
break;
case REFRESH_INCOMPLETE_HOSTNAME:
is_error = TRUE;
break;
case REFRESH_NONEXISTENT:
is_error = TRUE;
break;
case REFRESH_NOT_LOCAL:
is_error = TRUE;
break;
default:
g_assert_not_reached ();
return;
}
if (is_error)
{
g_assert (chooser_entry->current_folder_file == NULL);
beep (chooser_entry);
chooser_entry->load_complete_action = LOAD_COMPLETE_NOTHING;
}
}
static gboolean
gtk_file_chooser_entry_key_press_event (GtkWidget *widget,
GdkEventKey *event)
{
GtkFileChooserEntry *chooser_entry;
GtkEditable *editable;
GdkModifierType state;
gboolean control_pressed;
chooser_entry = GTK_FILE_CHOOSER_ENTRY (widget);
editable = GTK_EDITABLE (widget);
if (!chooser_entry->eat_tabs)
return GTK_WIDGET_CLASS (_gtk_file_chooser_entry_parent_class)->key_press_event (widget, event);
control_pressed = FALSE;
if (gtk_get_current_event_state (&state))
{
if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
control_pressed = TRUE;
}
/* This is a bit evil -- it makes Tab never leave the entry. It basically
* makes it 'safe' for people to hit. */
if (event->keyval == GDK_KEY_Tab && !control_pressed)
{
gint start, end;
gtk_editable_get_selection_bounds (editable, &start, &end);
if (start != end)
gtk_editable_set_position (editable, MAX (start, end));
else
start_explicit_completion (chooser_entry);
return TRUE;
}
return GTK_WIDGET_CLASS (_gtk_file_chooser_entry_parent_class)->key_press_event (widget, event);
}
static gboolean
gtk_file_chooser_entry_focus_out_event (GtkWidget *widget,
GdkEventFocus *event)
{
GtkFileChooserEntry *chooser_entry = GTK_FILE_CHOOSER_ENTRY (widget);
chooser_entry->load_complete_action = LOAD_COMPLETE_NOTHING;
return GTK_WIDGET_CLASS (_gtk_file_chooser_entry_parent_class)->focus_out_event (widget, event);
}
static void
commit_completion_and_refresh (GtkFileChooserEntry *chooser_entry)
{
/* Here we ignore the result of refresh_current_folder_and_file_part(); there is nothing we can do with it */
refresh_current_folder_and_file_part (chooser_entry, gtk_entry_get_text (GTK_ENTRY (chooser_entry)));
}
static void
gtk_file_chooser_entry_activate (GtkEntry *entry)
{
GtkFileChooserEntry *chooser_entry = GTK_FILE_CHOOSER_ENTRY (entry);
commit_completion_and_refresh (chooser_entry);
GTK_ENTRY_CLASS (_gtk_file_chooser_entry_parent_class)->activate (entry);
}
static void
discard_completion_store (GtkFileChooserEntry *chooser_entry)
{
if (!chooser_entry->completion_store)
return;
gtk_entry_completion_set_model (gtk_entry_get_completion (GTK_ENTRY (chooser_entry)), NULL);
gtk_entry_completion_set_inline_completion (gtk_entry_get_completion (GTK_ENTRY (chooser_entry)), FALSE);
g_object_unref (chooser_entry->completion_store);
chooser_entry->completion_store = NULL;
}
static gboolean
completion_store_set (GtkFileSystemModel *model,
GFile *file,
GFileInfo *info,
int column,
GValue *value,
gpointer data)
{
GtkFileChooserEntry *chooser_entry = data;
const char *prefix = "";
const char *suffix = "";
switch (column)
{
case FILE_COLUMN:
g_value_set_object (value, file);
break;
case FULL_PATH_COLUMN:
prefix = chooser_entry->dir_part;
/* fall through */
case DISPLAY_NAME_COLUMN:
if (_gtk_file_info_consider_as_directory (info))
suffix = G_DIR_SEPARATOR_S;
g_value_take_string (value, g_strconcat (
prefix,
g_file_info_get_display_name (info),
suffix,
NULL));
break;
default:
g_assert_not_reached ();
break;
}
return TRUE;
}
/* Fills the completion store from the contents of the current folder */
static void
populate_completion_store (GtkFileChooserEntry *chooser_entry)
{
discard_completion_store (chooser_entry);
chooser_entry->completion_store = GTK_TREE_MODEL (
_gtk_file_system_model_new_for_directory (chooser_entry->current_folder_file,
"standard::name,standard::display-name,standard::type",
completion_store_set,
chooser_entry,
N_COLUMNS,
G_TYPE_STRING,
G_TYPE_STRING,
G_TYPE_FILE));
g_signal_connect (chooser_entry->completion_store, "finished-loading",
G_CALLBACK (finished_loading_cb), chooser_entry);
gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (chooser_entry->completion_store),
DISPLAY_NAME_COLUMN, GTK_SORT_ASCENDING);
gtk_entry_completion_set_model (gtk_entry_get_completion (GTK_ENTRY (chooser_entry)),
chooser_entry->completion_store);
}
/* When we finish loading the current folder, this function should get called to
* perform the deferred explicit completion.
*/
static void
perform_load_complete_action (GtkFileChooserEntry *chooser_entry)
{
switch (chooser_entry->load_complete_action)
{
case LOAD_COMPLETE_NOTHING:
break;
case LOAD_COMPLETE_EXPLICIT_COMPLETION:
explicitly_complete (chooser_entry);
break;
default:
g_assert_not_reached ();
}
}
/* Callback when the current folder finishes loading */
static void
finished_loading_cb (GtkFileSystemModel *model,
GError *error,
GtkFileChooserEntry *chooser_entry)
{
GtkEntryCompletion *completion;
chooser_entry->current_folder_loaded = TRUE;
if (error)
{
LoadCompleteAction old_load_complete_action;
old_load_complete_action = chooser_entry->load_complete_action;
discard_completion_store (chooser_entry);
clear_completions (chooser_entry);
if (old_load_complete_action == LOAD_COMPLETE_EXPLICIT_COMPLETION)
{
/* Since this came from explicit user action (Tab completion), we'll present errors visually */
beep (chooser_entry);
}
return;
}
perform_load_complete_action (chooser_entry);
gtk_widget_set_tooltip_text (GTK_WIDGET (chooser_entry), NULL);
completion = gtk_entry_get_completion (GTK_ENTRY (chooser_entry));
gtk_entry_completion_set_inline_completion (completion, TRUE);
gtk_entry_completion_complete (completion);
gtk_entry_completion_insert_prefix (completion);
}
static RefreshStatus
reload_current_folder (GtkFileChooserEntry *chooser_entry,
GFile *folder_file)
{
g_assert (folder_file != NULL);
if (chooser_entry->current_folder_file
&& g_file_equal (folder_file, chooser_entry->current_folder_file))
return REFRESH_OK;
if (chooser_entry->current_folder_file)
{
discard_loading_and_current_folder_file (chooser_entry);
}
if (chooser_entry->local_only
&& !g_file_is_native (folder_file))
return REFRESH_NOT_LOCAL;
chooser_entry->current_folder_file = g_object_ref (folder_file);
chooser_entry->current_folder_loaded = FALSE;
populate_completion_store (chooser_entry);
return REFRESH_OK;
}
static RefreshStatus
refresh_current_folder_and_file_part (GtkFileChooserEntry *chooser_entry,
const gchar * text)
{
GFile *folder_file;
gchar *file_part;
gsize total_len, file_part_len;
gint file_part_pos;
GError *error;
RefreshStatus result;
error = NULL;
if (!gtk_file_chooser_entry_parse (chooser_entry,
text, &folder_file, &file_part, &error))
{
folder_file = g_object_ref (chooser_entry->base_folder);
if (g_error_matches (error, GTK_FILE_CHOOSER_ERROR, GTK_FILE_CHOOSER_ERROR_NONEXISTENT))
result = REFRESH_NONEXISTENT;
else
result = REFRESH_INVALID_INPUT;
if (error)
g_error_free (error);
file_part = g_strdup ("");
file_part_pos = -1;
}
else
{
g_assert (folder_file != NULL);
file_part_len = strlen (file_part);
total_len = strlen (text);
if (total_len > file_part_len)
file_part_pos = g_utf8_strlen (text, total_len - file_part_len);
else
file_part_pos = 0;
result = REFRESH_OK;
}
g_free (chooser_entry->file_part);
g_free (chooser_entry->dir_part);
chooser_entry->dir_part = file_part_pos > 0 ? g_strndup (text, file_part_pos) : g_strdup ("");
chooser_entry->file_part = file_part;
chooser_entry->file_part_pos = file_part_pos;
if (result == REFRESH_OK)
{
result = reload_current_folder (chooser_entry, folder_file);
}
else
{
discard_loading_and_current_folder_file (chooser_entry);
}
if (folder_file)
g_object_unref (folder_file);
g_assert (/* we are OK and we have a current folder file and (loading process or folder handle)... */
((result == REFRESH_OK)
&& (chooser_entry->current_folder_file != NULL))
/* ... OR we have an error, and we don't have a current folder file nor a loading process nor a folder handle */
|| ((result != REFRESH_OK)
&& (chooser_entry->current_folder_file == NULL)));
return result;
}
#ifdef G_OS_WIN32
static gint
insert_text_callback (GtkFileChooserEntry *chooser_entry,
const gchar *new_text,
gint new_text_length,
gint *position,
gpointer user_data)
{
const gchar *colon = memchr (new_text, ':', new_text_length);
gint i;
/* Disallow these characters altogether */
for (i = 0; i < new_text_length; i++)
{
if (new_text[i] == '<' ||
new_text[i] == '>' ||
new_text[i] == '"' ||
new_text[i] == '|' ||
new_text[i] == '*' ||
new_text[i] == '?')
break;
}
if (i < new_text_length ||
/* Disallow entering text that would cause a colon to be anywhere except
* after a drive letter.
*/
(colon != NULL &&
*position + (colon - new_text) != 1) ||
(new_text_length > 0 &&
*position <= 1 &&
gtk_entry_get_text_length (GTK_ENTRY (chooser_entry)) >= 2 &&
gtk_entry_get_text (GTK_ENTRY (chooser_entry))[1] == ':'))
{
gtk_widget_error_bell (GTK_WIDGET (chooser_entry));
g_signal_stop_emission_by_name (chooser_entry, "insert_text");
return FALSE;
}
return TRUE;
}
static void
delete_text_callback (GtkFileChooserEntry *chooser_entry,
gint start_pos,
gint end_pos,
gpointer user_data)
{
/* If deleting a drive letter, delete the colon, too */
if (start_pos == 0 && end_pos == 1 &&
gtk_entry_get_text_length (GTK_ENTRY (chooser_entry)) >= 2 &&
gtk_entry_get_text (GTK_ENTRY (chooser_entry))[1] == ':')
{
g_signal_handlers_block_by_func (chooser_entry,
G_CALLBACK (delete_text_callback),
user_data);
gtk_editable_delete_text (GTK_EDITABLE (chooser_entry), 0, 1);
g_signal_handlers_unblock_by_func (chooser_entry,
G_CALLBACK (delete_text_callback),
user_data);
}
}
#endif
/**
* _gtk_file_chooser_entry_new:
* @eat_tabs: If %FALSE, allow focus navigation with the tab key.
*
* Creates a new #GtkFileChooserEntry object. #GtkFileChooserEntry
* is an internal implementation widget for the GTK+ file chooser
* which is an entry with completion with respect to a
* #GtkFileSystem object.
*
* Return value: the newly created #GtkFileChooserEntry
**/
GtkWidget *
_gtk_file_chooser_entry_new (gboolean eat_tabs)
{
GtkFileChooserEntry *chooser_entry;
chooser_entry = g_object_new (GTK_TYPE_FILE_CHOOSER_ENTRY, NULL);
chooser_entry->eat_tabs = (eat_tabs != FALSE);
return GTK_WIDGET (chooser_entry);
}
/**
* _gtk_file_chooser_entry_set_base_folder:
* @chooser_entry: a #GtkFileChooserEntry
* @file: file for a folder in the chooser entries current file system.
*
* Sets the folder with respect to which completions occur.
**/
void
_gtk_file_chooser_entry_set_base_folder (GtkFileChooserEntry *chooser_entry,
GFile *file)
{
if (file)
g_object_ref (file);
else
file = g_file_new_for_path (g_get_home_dir ());
if (g_file_equal (chooser_entry->base_folder, file))
{
g_object_unref (file);
return;
}
if (chooser_entry->base_folder)
g_object_unref (chooser_entry->base_folder);
chooser_entry->base_folder = file;
clear_completions (chooser_entry);
}
/**
* _gtk_file_chooser_entry_get_current_folder:
* @chooser_entry: a #GtkFileChooserEntry
*
* Gets the current folder for the #GtkFileChooserEntry. If the
* user has only entered a filename, this will be in the base folder
* (see _gtk_file_chooser_entry_set_base_folder()), but if the
* user has entered a relative or absolute path, then it will
* be different. If the user has entered unparsable text, or text which
* the entry cannot handle, this will return %NULL.
*
* Return value: the file for the current folder - you must g_object_unref()
* the value after use.
**/
GFile *
_gtk_file_chooser_entry_get_current_folder (GtkFileChooserEntry *chooser_entry)
{
g_return_val_if_fail (GTK_IS_FILE_CHOOSER_ENTRY (chooser_entry), NULL);
return gtk_file_chooser_get_directory_for_text (chooser_entry,
gtk_entry_get_text (GTK_ENTRY (chooser_entry)));
}
/**
* _gtk_file_chooser_entry_get_file_part:
* @chooser_entry: a #GtkFileChooserEntry
*
* Gets the non-folder portion of whatever the user has entered
* into the file selector. What is returned is a UTF-8 string,
* and if a filename path is needed, g_file_get_child_for_display_name()
* must be used
*
* Return value: the entered filename - this value is owned by the
* chooser entry and must not be modified or freed.
**/
const gchar *
_gtk_file_chooser_entry_get_file_part (GtkFileChooserEntry *chooser_entry)
{
const char *last_slash, *text;
g_return_val_if_fail (GTK_IS_FILE_CHOOSER_ENTRY (chooser_entry), NULL);
text = gtk_entry_get_text (GTK_ENTRY (chooser_entry));
last_slash = strrchr (text, G_DIR_SEPARATOR);
if (last_slash)
return last_slash + 1;
else
return text;
}
/**
* _gtk_file_chooser_entry_set_file_part:
* @chooser_entry: a #GtkFileChooserEntry
* @file_part: text to display in the entry, in UTF-8
*
* Sets the current text shown in the file chooser entry.
**/
void
_gtk_file_chooser_entry_set_file_part (GtkFileChooserEntry *chooser_entry,
const gchar *file_part)
{
g_return_if_fail (GTK_IS_FILE_CHOOSER_ENTRY (chooser_entry));
chooser_entry->in_change = TRUE;
clear_completions (chooser_entry);
gtk_entry_set_text (GTK_ENTRY (chooser_entry), file_part);
chooser_entry->in_change = FALSE;
}
/**
* _gtk_file_chooser_entry_set_action:
* @chooser_entry: a #GtkFileChooserEntry
* @action: the action which is performed by the file selector using this entry
*
* Sets action which is performed by the file selector using this entry.
* The #GtkFileChooserEntry will use different completion strategies for
* different actions.
**/
void
_gtk_file_chooser_entry_set_action (GtkFileChooserEntry *chooser_entry,
GtkFileChooserAction action)
{
g_return_if_fail (GTK_IS_FILE_CHOOSER_ENTRY (chooser_entry));
if (chooser_entry->action != action)
{
GtkEntryCompletion *comp;
chooser_entry->action = action;
comp = gtk_entry_get_completion (GTK_ENTRY (chooser_entry));
/* FIXME: do we need to actually set the following? */
switch (action)
{
case GTK_FILE_CHOOSER_ACTION_OPEN:
case GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER:
gtk_entry_completion_set_popup_single_match (comp, FALSE);
break;
case GTK_FILE_CHOOSER_ACTION_SAVE:
case GTK_FILE_CHOOSER_ACTION_CREATE_FOLDER:
gtk_entry_completion_set_popup_single_match (comp, TRUE);
break;
}
}
}
/**
* _gtk_file_chooser_entry_get_action:
* @chooser_entry: a #GtkFileChooserEntry
*
* Gets the action for this entry.
*
* Returns: the action
**/
GtkFileChooserAction
_gtk_file_chooser_entry_get_action (GtkFileChooserEntry *chooser_entry)
{
g_return_val_if_fail (GTK_IS_FILE_CHOOSER_ENTRY (chooser_entry),
GTK_FILE_CHOOSER_ACTION_OPEN);
return chooser_entry->action;
}
gboolean
_gtk_file_chooser_entry_get_is_folder (GtkFileChooserEntry *chooser_entry,
GFile *file)
{
GtkTreeIter iter;
GFileInfo *info;
if (chooser_entry->completion_store == NULL ||
!_gtk_file_system_model_get_iter_for_file (GTK_FILE_SYSTEM_MODEL (chooser_entry->completion_store),
&iter,
file))
return FALSE;
info = _gtk_file_system_model_get_info (GTK_FILE_SYSTEM_MODEL (chooser_entry->completion_store),
&iter);
return _gtk_file_info_consider_as_directory (info);
}
/*
* _gtk_file_chooser_entry_select_filename:
* @chooser_entry: a #GtkFileChooserEntry
*
* Selects the filename (without the extension) for user edition.
*/
void
_gtk_file_chooser_entry_select_filename (GtkFileChooserEntry *chooser_entry)
{
const gchar *str, *ext;
glong len = -1;
if (chooser_entry->action == GTK_FILE_CHOOSER_ACTION_SAVE)
{
str = gtk_entry_get_text (GTK_ENTRY (chooser_entry));
ext = g_strrstr (str, ".");
if (ext)
len = g_utf8_pointer_to_offset (str, ext);
}
gtk_editable_select_region (GTK_EDITABLE (chooser_entry), 0, (gint) len);
}
void
_gtk_file_chooser_entry_set_local_only (GtkFileChooserEntry *chooser_entry,
gboolean local_only)
{
chooser_entry->local_only = local_only;
clear_completions (chooser_entry);
}
gboolean
_gtk_file_chooser_entry_get_local_only (GtkFileChooserEntry *chooser_entry)
{
return chooser_entry->local_only;
}
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