0e3e3e9914
2001-02-19 Jon Trowbridge <trow@ximian.com> * gal/e-text/e-entry.c (e_entry_enable_completion_full): Added. Allows you to attach an ECompletion to an EEntry, and have that ECompletion be used for (obviously enough) completions. * gal/e-text/e-completion-view.h, gal/e-text/e-completion-view.c: Added. ECompletionView is a widget for displaying the results of a completion request in a format that is appropriate for a drop-down window. * gal/e-text/e-completion.h, gal/e-text/e-completion.c: Added. ECompletion is a "pure virtual base class" for completion-type operations. It is implemented so that completions can be either synchronous or asynchronous. * gal/e-text/e-text.c: Lots of changes to accomodate the ETextModel changes. First of all, we render embedded text objects as being underlined. We also cause the model to emit the appropriate object activation signal when an embedded object is double-clicked. Also, all of the code that moves the cursor in response to user input has been removed. Instead, the EText now listens for "reposition" events from the underlying model, and bases all cursor motions on those. (get_bounds_item_relative): Fixed bug in the handling of differently-anchored text. Being differently-anchored is not a crime or a perversion --- it is an alternative lifestyle that we have to respect. * gal/e-text/e-text-model-uri.h, gal/e-text/e-text-model-uri.c: A sample ETextModel that converts URIs into embedded objects that get opened in the browser when you double-click them. * gal/e-text/e-text-model-repos.h, gal/e-text/e-text-model-repos.c: Added. A group of simple structures & functions for handling various cursor movement rules. These are the sorts of things that are passed as arguments to ETextModel "reposition" event handlers. * gal/e-text/e-text-model.h, gal/e-text/e-text-model.c: Privitized the ETextModel struct and "methodized" all of the operations, so that derived classes can do arbitrarily respond to get/set requests in arbitrarily strange ways. Also added the concept of declaring regions of the text as "embedded text objects". Finally, caused operations that change the text to emit a "reposition" signal that passes information that can be used by a view (like an EText) to move the cursor or selection in an intelligent way in response to those changes. This means that you can now open two ETexts that look at the same ETextModel, and have the cursor in one do the right thing when you edit the other. (As opposed to producing a lot of potential segfaults, as it was before.) svn path=/trunk/; revision=8280
113 lines
4.0 KiB
C
113 lines
4.0 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
|
|
/* ETextModel - Text item for evolution.
|
|
* Copyright (C) 2000 Helix Code, Inc.
|
|
*
|
|
* Author: Chris Lahey <clahey@umich.edu>
|
|
*
|
|
* A majority of code taken from:
|
|
*
|
|
* Text item type for GnomeCanvas widget
|
|
*
|
|
* GnomeCanvas is basically a port of the Tk toolkit's most excellent
|
|
* canvas widget. Tk is copyrighted by the Regents of the University
|
|
* of California, Sun Microsystems, and other parties.
|
|
*
|
|
* Copyright (C) 1998 The Free Software Foundation
|
|
*
|
|
* Author: Federico Mena <federico@nuclecu.unam.mx> */
|
|
|
|
|
|
#ifndef E_TEXT_MODEL_H
|
|
#define E_TEXT_MODEL_H
|
|
|
|
#include <gnome.h>
|
|
|
|
|
|
BEGIN_GNOME_DECLS
|
|
|
|
#define E_TYPE_TEXT_MODEL (e_text_model_get_type ())
|
|
#define E_TEXT_MODEL(obj) (GTK_CHECK_CAST ((obj), E_TYPE_TEXT_MODEL, ETextModel))
|
|
#define E_TEXT_MODEL_CLASS(klass) (GTK_CHECK_CLASS_CAST ((klass), E_TYPE_TEXT_MODEL, ETextModelClass))
|
|
#define E_IS_TEXT_MODEL(obj) (GTK_CHECK_TYPE ((obj), E_TYPE_TEXT_MODEL))
|
|
#define E_IS_TEXT_MODEL_CLASS(klass) (GTK_CHECK_CLASS_TYPE ((klass), E_TYPE_TEXT_MODEL))
|
|
|
|
typedef struct _ETextModel ETextModel;
|
|
typedef struct _ETextModelClass ETextModelClass;
|
|
|
|
struct _ETextModelPrivate;
|
|
|
|
typedef gint (*ETextModelReposFn) (gint, gpointer);
|
|
|
|
struct _ETextModel {
|
|
GtkObject item;
|
|
|
|
struct _ETextModelPrivate *priv;
|
|
};
|
|
|
|
struct _ETextModelClass {
|
|
GtkObjectClass parent_class;
|
|
|
|
/* Signal */
|
|
void (* changed) (ETextModel *model);
|
|
void (* reposition) (ETextModel *model, ETextModelReposFn fn, gpointer repos_fn_data);
|
|
void (* object_activated) (ETextModel *model, gint obj_num);
|
|
|
|
/* Virtual methods */
|
|
|
|
gint (* validate_pos) (ETextModel *model, gint pos);
|
|
|
|
const char *(* get_text) (ETextModel *model);
|
|
gint (* get_text_len) (ETextModel *model);
|
|
void (* set_text) (ETextModel *model, const gchar *text);
|
|
void (* insert) (ETextModel *model, gint position, const gchar *text);
|
|
void (* insert_length) (ETextModel *model, gint position, const gchar *text, gint length);
|
|
void (* delete) (ETextModel *model, gint position, gint length);
|
|
|
|
void (* objectify) (ETextModel *model);
|
|
gint (* obj_count) (ETextModel *model);
|
|
const gchar *(* get_nth_obj) (ETextModel *model, gint n, gint *len);
|
|
gint (* obj_at_offset) (ETextModel *model, gint offset);
|
|
};
|
|
|
|
GtkType e_text_model_get_type (void);
|
|
|
|
ETextModel *e_text_model_new (void);
|
|
|
|
void e_text_model_changed (ETextModel *model);
|
|
|
|
void e_text_model_reposition (ETextModel *model, ETextModelReposFn fn, gpointer repos_data);
|
|
gint e_text_model_validate_position (ETextModel *model, gint pos);
|
|
|
|
|
|
/* Functions for manipulating the underlying text. */
|
|
|
|
const gchar *e_text_model_get_text (ETextModel *model);
|
|
gint e_text_model_get_text_length (ETextModel *model);
|
|
void e_text_model_set_text (ETextModel *model, const gchar *text);
|
|
void e_text_model_insert (ETextModel *model, gint position, const gchar *text);
|
|
void e_text_model_insert_length (ETextModel *model, gint position, const gchar *text, gint length);
|
|
void e_text_model_prepend (ETextModel *model, const gchar *text);
|
|
void e_text_model_append (ETextModel *model, const gchar *text);
|
|
void e_text_model_delete (ETextModel *model, gint position, gint length);
|
|
|
|
|
|
/* Functions for accessing embedded objects. */
|
|
|
|
gint e_text_model_object_count (ETextModel *model);
|
|
const gchar *e_text_model_get_nth_object (ETextModel *model, gint n, gint *len);
|
|
gchar *e_text_model_strdup_nth_object (ETextModel *model, gint n);
|
|
void e_text_model_get_nth_object_bounds (ETextModel *model, gint n, gint *start_pos, gint *end_pos);
|
|
gint e_text_model_get_object_at_offset (ETextModel *model, gint offset);
|
|
gint e_text_model_get_object_at_pointer (ETextModel *model, const gchar *c);
|
|
void e_text_model_activate_nth_object (ETextModel *model, gint n);
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
END_GNOME_DECLS
|
|
|
|
#endif
|