1 /* $Id: entrycompletion.hg,v 1.24 2006/07/19 16:58:50 murrayc Exp $ */
3 /* Copyright (C) 2003 The gtkmm Development Team
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
15 * You should have received a copy of the GNU Library General Public
16 * License along with this library; if not, write to the Free
17 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #include <gtkmm/widget.h>
21 #include <gtkmm/treemodel.h>
24 _PINCLUDE(glibmm/private/object_p.h)
32 //TODO: This should derive+implement from CellLayout, when we can break ABI.
33 //Then we should add "It derives from the Gtk::CellLayout, to allow the user to add extra cells to the Gtk::TreeView with completion matches".
35 /** Completion functionality for Gtk::Entry.
37 * Gtk::EntryCompletion is an auxiliary object to be used in conjunction with
38 * Gtk::Entry to provide the completion functionality.
40 * "Completion functionality" means that when the user modifies the text in the
41 * entry, Gtk::EntryCompletion checks which rows in the model match the current
42 * content of the entry, and displays a list of matches. By default, the
43 * matching is done by comparing the entry text case-insensitively against
44 * the text column of the model (see set_text_column()),
45 * but this can be overridden with a custom match function (see set_match_func()).
47 * When the user selects a completion, the content of the entry is updated.
48 * By default, the content of the entry is replaced by the text column of the
49 * model, but this can be overridden by connecting to the match_selected signal
50 * and updating the entry in the signal handler. Note that you should return true
51 * from the signal handler to suppress the default behaviour.
53 * To add completion functionality to an entry, use Gtk::Entry::set_completion().
55 * In addition to regular completion matches, which will be inserted into
56 * the entry when they are selected, Gtk::EntryCompletion also allows the display of
57 * "actions" in the popup window. Their appearance is similar to menu items,
58 * to differentiate them clearly from completion strings. When an action is
59 * selected, the action_activated signal is emitted.
61 class EntryCompletion : public Glib::Object
63 _CLASS_GOBJECT(EntryCompletion, GtkEntryCompletion, GTK_ENTRY_COMPLETION, Glib::Object, GObject)
71 //Careful, this actually returns a GtkWidget*, so it might not always be a GtkEntry in future GTK+ versions.
72 _WRAP_METHOD(Entry* get_entry(), gtk_entry_completion_get_entry)
73 _WRAP_METHOD(const Entry* get_entry() const, gtk_entry_completion_get_entry)
75 _WRAP_METHOD(void set_model(const Glib::RefPtr<TreeModel>& model), gtk_entry_completion_set_model)
76 _WRAP_METHOD(Glib::RefPtr<TreeModel> get_model(), gtk_entry_completion_get_model, refreturn)
77 _WRAP_METHOD(Glib::RefPtr<const TreeModel> get_model() const, gtk_entry_completion_get_model, refreturn, constversion)
79 /// For example, bool on_match(const Glib::ustring& key, const TreeModel::const_iterator& iter);
80 typedef sigc::slot<bool, const Glib::ustring&, const TreeModel::const_iterator&> SlotMatch;
82 void set_match_func(const SlotMatch& slot);
83 _IGNORE(gtk_entry_completion_set_match_func)
85 _WRAP_METHOD(void set_minimum_key_length(int length), gtk_entry_completion_set_minimum_key_length)
86 _WRAP_METHOD(int get_minimum_key_length() const, gtk_entry_completion_get_minimum_key_length)
87 _WRAP_METHOD(void complete(), gtk_entry_completion_complete)
89 _WRAP_METHOD(void insert_prefix(), gtk_entry_completion_insert_prefix)
91 //We reordered the parameters, compared to the C version, so that we can have method overloads without the index.
93 // TODO: We would really like an insert() which before-inserts an iterator, like ListStore::insert(),
94 // but there is no EntryCompletion::insert_before() for us to use.
95 void insert_action_text(const Glib::ustring& text, int index);
96 void prepend_action_text(const Glib::ustring& text);
97 //TODO: Add append_action_text() somehow? It would be slow if we count the children each time. murrayc.
98 _IGNORE(gtk_entry_completion_insert_action_text)
99 void insert_action_markup(const Glib::ustring& markup, int index);
100 void prepend_action_markup(const Glib::ustring& markup);
101 _IGNORE(gtk_entry_completion_insert_action_markup)
103 //TODO: Change default - it would be nicer to delete the last action instead of the first.
104 _WRAP_METHOD(void delete_action(int index = 0), gtk_entry_completion_delete_action)
106 _WRAP_METHOD(void set_inline_completion(bool inline_completion = true), gtk_entry_completion_set_inline_completion)
107 _WRAP_METHOD(bool get_inline_completion() const, gtk_entry_completion_get_inline_completion)
108 _WRAP_METHOD(void set_inline_selection(bool inline_selection = true), gtk_entry_completion_set_inline_selection)
109 _WRAP_METHOD(bool get_inline_selection() const, gtk_entry_completion_get_inline_selection)
110 _WRAP_METHOD(void set_popup_completion(bool popup_completion = true), gtk_entry_completion_set_popup_completion)
111 _WRAP_METHOD(bool get_popup_completion() const, gtk_entry_completion_get_popup_completion)
113 _WRAP_METHOD(void set_popup_set_width(bool popup_set_width = true), gtk_entry_completion_set_popup_set_width)
114 _WRAP_METHOD(bool get_popup_set_width() const, gtk_entry_completion_get_popup_set_width)
116 //TODO This is wrongly named: Deprecate it and add set_popup_single_match().
117 _WRAP_METHOD(void set_popup_single_width(bool popup_single_match = true), gtk_entry_completion_set_popup_single_match)
119 _WRAP_METHOD(bool get_popup_single_match() const, gtk_entry_completion_get_popup_single_match)
120 _WRAP_METHOD(Glib::ustring get_completion_prefix() const, gtk_entry_completion_get_completion_prefix)
122 _WRAP_METHOD(void set_text_column(const TreeModelColumnBase& column), gtk_entry_completion_set_text_column)
123 _WRAP_METHOD(void set_text_column(int column), gtk_entry_completion_set_text_column)
124 _WRAP_METHOD(int get_text_column(), gtk_entry_completion_get_text_column)
126 /** Emitted when an action is activated.
128 * @param index The index of the activated action.
130 _WRAP_SIGNAL(void action_activated(int index), action_activated)
132 //We completely hand-code these signals because we want to change how the parameters are wrapped,
133 //because we need both the iter and the model to make the C++ iter.
134 _IGNORE_SIGNAL(match_selected)
135 _IGNORE_SIGNAL(cursor_on_match)
137 /** Emitted when a match from the list is selected.
138 * The default behaviour is to replace the contents of the
139 * entry with the contents of the text column in the row
140 * pointed to by @a iter.
142 * @param model The TreeModel containing the matches
143 * @param iter A TreeModel::iterator positioned at the selected match
144 * @result true if the signal has been handled
147 * <tt>bool %on_match_selected(const TreeModel::iterator& iter)</tt>
149 Glib::SignalProxy1< bool, const TreeModel::iterator& > signal_match_selected();
151 /** Emitted when a match from the cursor is on a match
152 * of the list. The default behaviour is to replace the contents
153 * of the entry with the contents of the text column in the row
154 * pointed to by @a iter.
156 * @param model The TreeModel containing the matches
157 * @param iter A TreeModel::iterator positioned at the selected match
158 * @result true if the signal has been handled
161 * <tt>bool %on_cursor_on_match(const TreeModel::iterator& iter)</tt>
165 Glib::SignalProxy1< bool, const TreeModel::iterator& > signal_cursor_on_match();
169 dnl// Hook in custom callback.
170 dnl// It will use the callback.
172 _PUSH(SECTION_PCC_CLASS_INIT_DEFAULT_SIGNAL_HANDLERS)
173 klass->match_selected = &match_selected_callback_custom;
174 _SECTION(SECTION_PH_DEFAULT_SIGNAL_HANDLERS)
175 static gboolean match_selected_callback_custom(GtkEntryCompletion* self, GtkTreeModel* c_model, GtkTreeIter* c_iter);
179 //We use no_default_handler for these signals, because we can not add a new vfunc without breaking ABI.
180 //TODO: Remove no_default_handler when we do an ABI-break-with-parallel-install.
182 /** Emitted when the inline autocompletion is triggered.
183 * The default behaviour is to make the entry display the
184 * whole prefix and select the newly inserted part.
186 * Applications may connect to this signal in order to insert only a
187 * smaller part of the @a prefix into the entry - e.g. the entry used in
188 * the FileChooser inserts only the part of the prefix up to the
193 * @param prefix The common prefix of all possible completions.
194 * @result true if the signal has been handled
196 _WRAP_SIGNAL(bool insert_prefix(const Glib::ustring& prefix), insert_prefix, no_default_handler)
198 _WRAP_PROPERTY("model", Glib::RefPtr<Gtk::TreeModel>)
199 _WRAP_PROPERTY("minimum_key_length", int)
200 _WRAP_PROPERTY("text_column, int)
201 _WRAP_PROPERTY("inline_completion", bool)
202 _WRAP_PROPERTY("popup_completion", bool)
203 _WRAP_PROPERTY("popup_set_width", bool)
204 _WRAP_PROPERTY("popup_single_match", bool)
205 _WRAP_PROPERTY("inline-selection", bool)
209 #ifdef GLIBMM_DEFAULT_SIGNAL_HANDLERS_ENABLED
210 //Default Signal Handler:
211 virtual bool on_match_selected(const TreeModel::iterator& iter);
212 //No default handler for on_cursor_on_match(), to preserver ABI. TODO: Add this when we can break ABI.
213 #endif //GLIBMM_DEFAULT_SIGNAL_HANDLERS_ENABLED