path: root/widgets/text/e-entry.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */

/*
 * EEntry: An EText-based entry widget
 *
 * Authors:
 *   Miguel de Icaza <miguel@helixcode.com>
 *   Chris Lahey     <clahey@helixcode.com>
 *   Jon Trowbridge  <trow@ximian.com>
 *
 * Copyright (C) 1999, 2000, 2001 Ximian Inc.
 */

/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA
 */

#include <config.h>
#include <math.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#ifdef HAVE_ALLOCA_H
#include <alloca.h>
#endif
#include <stdio.h>
#include <gdk/gdkkeysyms.h>
#include <gtk/gtksignal.h>
#include <gnome-xml/parser.h>
#include <libgnomeui/gnome-canvas.h>
#include "gal/util/e-util.h"
#include "gal/widgets/e-canvas.h"
#include "gal/widgets/e-canvas-utils.h"
#include "e-completion-view.h"
#include "e-text.h"
#include "e-entry.h"

#define MOVE_RIGHT_AND_UP 0

#define EVIL_POINTER_WARPING_HACK

#ifdef EVIL_POINTER_WARPING_HACK
#include <gdk/gdkx.h>
#endif

#define MIN_ENTRY_WIDTH  150

#define PARENT_TYPE gtk_table_get_type ()

static GtkObjectClass *parent_class;

enum {
    E_ENTRY_CHANGED,
    E_ENTRY_ACTIVATE,
    E_ENTRY_POPUP,
    E_ENTRY_LAST_SIGNAL
};

static guint e_entry_signals[E_ENTRY_LAST_SIGNAL] = { 0 };

/* Object argument IDs */
enum {
    ARG_0,
    ARG_MODEL,
    ARG_EVENT_PROCESSOR,
    ARG_TEXT,
    ARG_FONT,
        ARG_FONTSET,
    ARG_FONT_GDK,
    ARG_ANCHOR,
    ARG_JUSTIFICATION,
    ARG_X_OFFSET,
    ARG_Y_OFFSET,
    ARG_FILL_COLOR,
    ARG_FILL_COLOR_GDK,
    ARG_FILL_COLOR_RGBA,
    ARG_FILL_STIPPLE,
    ARG_EDITABLE,
    ARG_USE_ELLIPSIS,
    ARG_ELLIPSIS,
    ARG_LINE_WRAP,
    ARG_BREAK_CHARACTERS,
    ARG_MAX_LINES,
    ARG_ALLOW_NEWLINES,
    ARG_DRAW_BORDERS,
    ARG_DRAW_BACKGROUND,
    ARG_CURSOR_POS
};

typedef struct _EEntryPrivate EEntryPrivate;
struct _EEntryPrivate {
    GtkJustification justification;

    guint changed_proxy_tag;
    guint activate_proxy_tag;
    guint popup_proxy_tag;

    /* Data related to completions */
    ECompletion *completion;
    EEntryCompletionHandler handler;
    GtkWidget *completion_view;
    guint nonempty_signal_id;
    guint added_signal_id;
    guint full_signal_id;
    guint browse_signal_id;
    guint unbrowse_signal_id;
    guint activate_signal_id;
    GtkWidget *completion_view_popup;
    gboolean popup_is_visible;
    gchar *pre_browse_text;
    gint completion_delay;
    guint completion_delay_tag;
    gboolean ptr_grab;
    gboolean changed_since_keypress;
    guint changed_since_keypress_tag;
    gint last_completion_pos;

    guint draw_borders : 1;
};

static gboolean e_entry_is_empty              (EEntry *entry);
static void e_entry_show_popup                (EEntry *entry, gboolean x);
static void e_entry_start_completion          (EEntry *entry);
static void e_entry_start_delayed_completion  (EEntry *entry, gint delay);
static void e_entry_cancel_delayed_completion (EEntry *entry);

static void
canvas_size_allocate (GtkWidget *widget, GtkAllocation *alloc,
              EEntry *entry)
{
    gnome_canvas_set_scroll_region (entry->canvas,
                    0, 0, alloc->width, alloc->height);
    gtk_object_set (GTK_OBJECT (entry->item),
            "clip_width", (double) (alloc->width),
            "clip_height", (double) (alloc->height),
            NULL);

    switch (entry->priv->justification) {
    case GTK_JUSTIFY_RIGHT:
        e_canvas_item_move_absolute(GNOME_CANVAS_ITEM(entry->item),
                        alloc->width, 0);
        break;
    case GTK_JUSTIFY_CENTER:
        e_canvas_item_move_absolute(GNOME_CANVAS_ITEM(entry->item),
                        alloc->width / 2, 0);
        break;
    default:
        e_canvas_item_move_absolute(GNOME_CANVAS_ITEM(entry->item),
                        0, 0);
        break;
    }
}

static void
canvas_size_request (GtkWidget *widget, GtkRequisition *requisition,
             EEntry *entry)
{
    int xthick, ythick;
    
    g_return_if_fail (widget != NULL);
    g_return_if_fail (GNOME_IS_CANVAS (widget));
    g_return_if_fail (requisition != NULL);

    if (entry->priv->draw_borders) {
        xthick = 2 * widget->style->klass->xthickness;
        ythick = 2 * widget->style->klass->ythickness;
    } else {
        xthick = ythick = 0;
    }
    
    requisition->width = 2 + MIN_ENTRY_WIDTH + xthick;
    requisition->height = (2 + widget->style->font->ascent +
                   widget->style->font->descent +
                   ythick);
}

static gint
canvas_focus_in_event (GtkWidget *widget, GdkEventFocus *focus, EEntry *entry)
{
    if (entry->canvas->focused_item != GNOME_CANVAS_ITEM(entry->item))
        gnome_canvas_item_grab_focus(GNOME_CANVAS_ITEM(entry->item));

    return FALSE;
}

static void
e_entry_text_keypress (EText *text, guint keyval, guint state, EEntry *entry)
{
    if (entry->priv->changed_since_keypress_tag) {
        gtk_timeout_remove (entry->priv->changed_since_keypress_tag);
        entry->priv->changed_since_keypress_tag = 0;
    }
    
    if (entry->priv->changed_since_keypress
        || (entry->priv->popup_is_visible && e_entry_get_position (entry) != entry->priv->last_completion_pos)) {
        if (e_entry_is_empty (entry)) {
            e_entry_cancel_delayed_completion (entry);
            e_entry_show_popup (entry, FALSE);
        } else if (entry->priv->popup_is_visible) {
            e_entry_start_delayed_completion (entry, 1);
        } else if (entry->priv->completion)
            e_entry_start_delayed_completion (entry, entry->priv->completion_delay);
    }
    entry->priv->changed_since_keypress = FALSE;
}

static gint
changed_since_keypress_timeout_fn (gpointer user_data)
{
    EEntry *entry = E_ENTRY (user_data);
    entry->priv->changed_since_keypress = FALSE;
    entry->priv->changed_since_keypress_tag = 0;
    return FALSE;
}

static void
e_entry_proxy_changed (EText *text, EEntry *entry)
{
    if (entry->priv->changed_since_keypress_tag)
        gtk_timeout_remove (entry->priv->changed_since_keypress_tag);
    entry->priv->changed_since_keypress = TRUE;
    entry->priv->changed_since_keypress_tag = gtk_timeout_add (20, changed_since_keypress_timeout_fn, entry);
    
    gtk_signal_emit (GTK_OBJECT (entry), e_entry_signals [E_ENTRY_CHANGED]);
}

static void
e_entry_proxy_activate (EText *text, EEntry *entry)
{
    gtk_signal_emit (GTK_OBJECT (entry), e_entry_signals [E_ENTRY_ACTIVATE]);
}

static void
e_entry_proxy_popup (EText *text, GdkEventButton *ev, gint pos, EEntry *entry)
{
    gtk_signal_emit (GTK_OBJECT (entry), e_entry_signals [E_ENTRY_POPUP], ev, pos);
}

static void
e_entry_init (GtkObject *object)
{
    EEntry *entry = E_ENTRY (object);
    GtkTable *gtk_table = GTK_TABLE (object);

    entry->priv = g_new0 (EEntryPrivate, 1);
    
    entry->canvas = GNOME_CANVAS (e_canvas_new ());

    gtk_signal_connect (GTK_OBJECT (entry->canvas),
                "size_allocate",
                GTK_SIGNAL_FUNC (canvas_size_allocate),
                entry);

    gtk_signal_connect (GTK_OBJECT (entry->canvas),
                "size_request",
                GTK_SIGNAL_FUNC (canvas_size_request),
                entry);

    gtk_signal_connect(GTK_OBJECT (entry->canvas),
               "focus_in_event",
               GTK_SIGNAL_FUNC(canvas_focus_in_event),
               entry);

    entry->priv->draw_borders = TRUE;

    entry->item = E_TEXT(gnome_canvas_item_new(
        gnome_canvas_root (entry->canvas),
        e_text_get_type(),
        "clip", TRUE,
        "fill_clip_rectangle", TRUE,
        "anchor", GTK_ANCHOR_NW,
        "draw_borders", TRUE,
        "draw_background", TRUE,
        "max_lines", 1,
        "editable", TRUE,
        "allow_newlines", FALSE,
        NULL));

    gtk_signal_connect (GTK_OBJECT (entry->item),
                "keypress",
                GTK_SIGNAL_FUNC (e_entry_text_keypress),
                entry);

    entry->priv->justification = GTK_JUSTIFY_LEFT;
    gtk_table_attach (gtk_table, GTK_WIDGET (entry->canvas),
              0, 1, 0, 1,
              GTK_EXPAND | GTK_FILL | GTK_SHRINK,
              GTK_EXPAND | GTK_FILL | GTK_SHRINK,
              0, 0);
    gtk_widget_show (GTK_WIDGET (entry->canvas));

    /*
     * Proxy functions: we proxy the changed and activate signals
     * from the item to ourselves
     */
    entry->priv->changed_proxy_tag = gtk_signal_connect (
        GTK_OBJECT (entry->item),
        "changed",
        GTK_SIGNAL_FUNC (e_entry_proxy_changed),
        entry);
    entry->priv->activate_proxy_tag = gtk_signal_connect (
        GTK_OBJECT (entry->item),
        "activate",
        GTK_SIGNAL_FUNC (e_entry_proxy_activate),
        entry);
    entry->priv->popup_proxy_tag = gtk_signal_connect (
        GTK_OBJECT (entry->item),
        "popup",
        GTK_SIGNAL_FUNC (e_entry_proxy_popup),
        entry);

    entry->priv->completion_delay = 1;
}

/**
 * e_entry_construct
 * 
 * Constructs the given EEntry.
 * 
 **/
void
e_entry_construct (EEntry *entry)
{
    /* Do nothing */
}


/**
 * e_entry_new
 * 
 * Creates a new EEntry.
 * 
 * Returns: The new EEntry
 **/
GtkWidget *
e_entry_new (void)
{
    EEntry *entry;
    entry = gtk_type_new (e_entry_get_type ());
    e_entry_construct (entry);

    return GTK_WIDGET (entry);
}

const gchar *
e_entry_get_text (EEntry *entry)
{
    g_return_val_if_fail (entry != NULL && E_IS_ENTRY (entry), NULL);

    return e_text_model_get_text (entry->item->model);
}

void
e_entry_set_text (EEntry *entry, const gchar *txt)
{
    g_return_if_fail (entry != NULL && E_IS_ENTRY (entry));

    e_text_model_set_text (entry->item->model, txt);
}

static void
e_entry_set_text_quiet (EEntry *entry, const gchar *txt)
{
    g_return_if_fail (entry != NULL && E_IS_ENTRY (entry));

    gtk_signal_handler_block (GTK_OBJECT (entry->item), entry->priv->changed_proxy_tag);
    e_entry_set_text (entry, txt);
    gtk_signal_handler_unblock (GTK_OBJECT (entry->item), entry->priv->changed_proxy_tag);
}


void
e_entry_set_editable (EEntry *entry, gboolean am_i_editable)
{
    g_return_if_fail (entry != NULL && E_IS_ENTRY (entry));

    gtk_object_set (GTK_OBJECT (entry->item), "editable", am_i_editable, NULL);
}

gint
e_entry_get_position (EEntry *entry)
{
    g_return_val_if_fail (entry != NULL && E_IS_ENTRY (entry), -1);

    return entry->item->selection_start;
}

void
e_entry_set_position (EEntry *entry, gint pos)
{
    g_return_if_fail (entry != NULL && E_IS_ENTRY (entry));
    if (pos < 0)
        pos = 0;
    else if (pos > e_text_model_get_text_length (entry->item->model))
        pos = e_text_model_get_text_length (entry->item->model);

    entry->item->selection_start = entry->item->selection_end = pos;
}

void
e_entry_select_region (EEntry *entry, gint pos1, gint pos2)
{
    gint len;

    g_return_if_fail (entry != NULL && E_IS_ENTRY (entry));
    
    len = e_text_model_get_text_length (entry->item->model);
    pos1 = CLAMP (pos1, 0, len);
    pos2 = CLAMP (pos2, 0, len);

    entry->item->selection_start = MIN (pos1, pos2);
    entry->item->selection_end   = MAX (pos1, pos2);
}

/** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** **/

/*** Completion-related code ***/

static gboolean
e_entry_is_empty (EEntry *entry)
{
    const gchar *txt = e_entry_get_text (entry);

    if (txt == NULL)
        return TRUE;

    while (*txt) {
        if (!isspace ((gint) *txt))
            return FALSE;
        ++txt;
    }
    
    return TRUE;
}

static void
e_entry_show_popup (EEntry *entry, gboolean visible)
{
    GtkWidget *pop = entry->priv->completion_view_popup;

    if (pop == NULL)
        return;

    if (visible) {
        GtkAllocation *dim = &(GTK_WIDGET (entry)->allocation);
        gint x, y, xo, yo, fudge;
        const GdkEventMask grab_mask = (GdkEventMask)GDK_BUTTON_PRESS_MASK | GDK_BUTTON_MOTION_MASK | GDK_BUTTON_RELEASE_MASK;

        /* Figure out where to put our popup. */
        gdk_window_get_origin (GTK_WIDGET (entry)->window, &xo, &yo);
        x = xo + dim->x;
        y = yo + dim->height + dim->y;

#if MOVE_RIGHT_AND_UP
        /* Put our popup slightly to the right and up, to try to give a visual cue that this popup
         is tied to this entry.  Otherwise one-row popups can sort of "blend" with an entry
         directly below. */
        fudge = MAX (dim->height/10, 3); /* just in case we are using a really big font, etc. */
        x += 2*fudge;
        y -= fudge;
#else
        fudge = 1;
        y -= fudge;
#endif
        gtk_widget_set_uposition (pop, x, y);
        e_completion_view_set_width (E_COMPLETION_VIEW (entry->priv->completion_view), dim->width);

#ifdef EVIL_POINTER_WARPING_HACK
        /*
          I should have learned by now to listen to Havoc... 
          http://developer.gnome.org/doc/GGAD/faqs.html
        */
           
        if (! entry->priv->popup_is_visible) {
            GdkWindow *gwin = GTK_WIDGET (entry)->window;
            gint xx, yy;
            gdk_window_get_pointer (gwin, &xx, &yy, NULL);
            xx += xo;
            yy += yo;
            
            /* If we are inside the "zone of death" where the popup will appear, warp the pointer to safety.
               This is a horrible thing to do. */
            if (y <= yy && yy < yy + dim->height && x <= xx && xx < xx + dim->width) {
                XWarpPointer (GDK_WINDOW_XDISPLAY (gwin), None, GDK_WINDOW_XWINDOW (gwin),
                          0, 0, 0, 0, 
                          xx - xo, (y-1) - yo);
            }
        }
#endif
    
        gtk_widget_show (pop);


        if (getenv ("GAL_E_ENTRY_NO_GRABS_HACK") == NULL && !entry->priv->ptr_grab) {
            entry->priv->ptr_grab = (0 == gdk_pointer_grab (GTK_WIDGET (entry->priv->completion_view)->window, TRUE,
                                    grab_mask, NULL, NULL, GDK_CURRENT_TIME));
            if (entry->priv->ptr_grab) {
                gtk_grab_add (GTK_WIDGET (entry->priv->completion_view));
            }
        }
        
        
    } else {

        gtk_widget_hide (pop);

        if (entry->priv->ptr_grab) {
            gdk_pointer_ungrab (GDK_CURRENT_TIME);
            gtk_grab_remove (GTK_WIDGET (entry->priv->completion_view));
        }

        entry->priv->ptr_grab = FALSE;

        entry->priv->last_completion_pos = -1;
    }

    e_completion_view_set_editable (E_COMPLETION_VIEW (entry->priv->completion_view), visible);
    entry->priv->popup_is_visible = visible;
}

static void
e_entry_refresh_popup (EEntry *entry)
{
    if (entry->priv->popup_is_visible)
        e_entry_show_popup (entry, TRUE);
}

static void
e_entry_start_completion (EEntry *entry)
{
    if (entry->priv->completion == NULL)
        return;

    e_entry_cancel_delayed_completion (entry);

    if (e_entry_is_empty (entry))
        return;
    
    e_completion_begin_search (entry->priv->completion,
                   e_entry_get_text (entry),
                   entry->priv->last_completion_pos = e_entry_get_position (entry),
                   0); /* No limit.  Probably a bad idea. */
}

static gboolean
start_delayed_cb (gpointer user_data)
{
    EEntry *entry = E_ENTRY (user_data);
    entry->priv->completion_delay_tag = 0;
    e_entry_start_completion (entry);
    return FALSE;
}

static void
e_entry_start_delayed_completion (EEntry *entry, gint delay)
{
    if (delay < 0)
        return;

    e_entry_cancel_delayed_completion (entry);
    entry->priv->completion_delay_tag = gtk_timeout_add (MAX (delay, 1), start_delayed_cb, entry);
}

static void
e_entry_cancel_delayed_completion (EEntry *entry)
{
    if (entry->priv->completion == NULL)
        return;

    if (entry->priv->completion_delay_tag) {
        gtk_timeout_remove (entry->priv->completion_delay_tag);
        entry->priv->completion_delay_tag = 0;
    }
}

static void
nonempty_cb (ECompletionView *view, gpointer user_data)
{
    EEntry *entry = E_ENTRY (user_data);

    e_entry_show_popup (entry, TRUE);
}

static void
added_cb (ECompletionView *view, gpointer user_data)
{
    EEntry *entry = E_ENTRY (user_data);
    e_entry_refresh_popup (entry);
}

static void
full_cb (ECompletionView *view, gpointer user_data)
{
    EEntry *entry = E_ENTRY (user_data);

    e_entry_show_popup (entry, view->choice_count > 0);
}

static void
browse_cb (ECompletionView *view, ECompletionMatch *match, gpointer user_data)
{
    EEntry *entry = E_ENTRY (user_data);
    
    if (match == NULL) {
        /* Requesting a completion. */
        e_entry_start_completion (entry);
        return;
    }

    if (entry->priv->pre_browse_text == NULL)
        entry->priv->pre_browse_text = g_strdup (e_entry_get_text (entry));

    /* If there is no other handler in place, echo the selected completion in
       the entry. */
    if (entry->priv->handler == NULL)
        e_entry_set_text_quiet (entry, e_completion_match_get_match_text (match));
}

static void
unbrowse_cb (ECompletionView *view, gpointer user_data)
{
    EEntry *entry = E_ENTRY (user_data);

    if (entry->priv->pre_browse_text) {

        if (entry->priv->handler == NULL)
            e_entry_set_text_quiet (entry, entry->priv->pre_browse_text);

        g_free (entry->priv->pre_browse_text);
        entry->priv->pre_browse_text = NULL;
    }

    e_entry_show_popup (entry, FALSE);
}

static void
activate_cb (ECompletionView *view, ECompletionMatch *match, gpointer user_data)
{
    EEntry *entry = E_ENTRY (user_data);

    e_entry_cancel_delayed_completion (entry);
    
    g_free (entry->priv->pre_browse_text);
    entry->priv->pre_browse_text = NULL;
    e_entry_show_popup (entry, FALSE);

    if (entry->priv->handler)
        entry->priv->handler (entry, match);
    else
        e_entry_set_text (entry, match->match_text);

    e_entry_cancel_delayed_completion (entry);
}

void
e_entry_enable_completion (EEntry *entry, ECompletion *completion)
{
    g_return_if_fail (entry != NULL && E_IS_ENTRY (entry));
    g_return_if_fail (completion != NULL && E_IS_COMPLETION (completion));

    e_entry_enable_completion_full (entry, completion, -1, NULL);
}

static void
button_press_cb (GtkWidget *w, GdkEvent *ev, gpointer user_data)
{
    EEntry *entry = E_ENTRY (user_data);
    GtkWidget *child;

    /* Bail out if our click happened inside of our widget. */
    child = gtk_get_event_widget (ev);
    if (child != w) {
        while (child) {
            if (child == w)
                return;
            child = child->parent;
        }
    }

    /* Treat this as an unbrowse */
    unbrowse_cb (E_COMPLETION_VIEW (w), entry);
}

static gint
key_press_cb (GtkWidget *w, GdkEventKey *ev, gpointer user_data)
{
    gint rv = 0;
    /* Forward signal */
    gtk_signal_emit_by_name (GTK_OBJECT (user_data), "key_press_event", ev, &rv);
    return rv;
}

static gint
key_release_cb (GtkWidget *w, GdkEventKey *ev, gpointer user_data)
{
    gint rv = 0;
    /* Forward signal */
    gtk_signal_emit_by_name (GTK_OBJECT (user_data), "key_release_event", ev, &rv);
    return rv;
}

void
e_entry_enable_completion_full (EEntry *entry, ECompletion *completion, gint delay, EEntryCompletionHandler handler)
{
    g_return_if_fail (entry != NULL && E_IS_ENTRY (entry));
    g_return_if_fail (completion != NULL && E_IS_COMPLETION (completion));

    /* For now, completion can't be changed mid-stream. */
    g_return_if_fail (entry->priv->completion == NULL);

    entry->priv->completion = completion;
    gtk_object_ref (GTK_OBJECT (completion));
    gtk_object_sink (GTK_OBJECT (completion));
    
    entry->priv->completion_delay = delay;
    entry->priv->handler = handler;

    entry->priv->completion_view = e_completion_view_new (completion);
    /* Make the up and down keys enable and disable completions. */
    e_completion_view_set_complete_key (E_COMPLETION_VIEW (entry->priv->completion_view), GDK_Down);
    e_completion_view_set_uncomplete_key (E_COMPLETION_VIEW (entry->priv->completion_view), GDK_Up);

    gtk_signal_connect_after (GTK_OBJECT (entry->priv->completion_view),
                  "button_press_event",
                  GTK_SIGNAL_FUNC (button_press_cb),
                  entry);

    entry->priv->nonempty_signal_id = gtk_signal_connect (GTK_OBJECT (entry->priv->completion_view),
                                  "nonempty",
                                  GTK_SIGNAL_FUNC (nonempty_cb),
                                  entry);

    entry->priv->added_signal_id = gtk_signal_connect (GTK_OBJECT (entry->priv->completion_view),
                               "added",
                               GTK_SIGNAL_FUNC (added_cb),
                               entry);

    entry->priv->full_signal_id = gtk_signal_connect (GTK_OBJECT (entry->priv->completion_view),
                              "full",
                              GTK_SIGNAL_FUNC (full_cb),
                              entry);

    entry->priv->browse_signal_id = gtk_signal_connect (GTK_OBJECT (entry->priv->completion_view),
                                "browse",
                                GTK_SIGNAL_FUNC (browse_cb),
                                entry);

    entry->priv->unbrowse_signal_id = gtk_signal_connect (GTK_OBJECT (entry->priv->completion_view),
                                  "unbrowse",
                                  GTK_SIGNAL_FUNC (unbrowse_cb),
                                  entry);

    entry->priv->activate_signal_id = gtk_signal_connect (GTK_OBJECT (entry->priv->completion_view),
                                  "activate",
                                  GTK_SIGNAL_FUNC (activate_cb),
                                  entry);

    entry->priv->completion_view_popup = gtk_window_new (GTK_WINDOW_POPUP);

    gtk_signal_connect (GTK_OBJECT (entry->priv->completion_view_popup),
                "key_press_event",
                GTK_SIGNAL_FUNC (key_press_cb),
                entry->canvas);
    gtk_signal_connect (GTK_OBJECT (entry->priv->completion_view_popup),
                "key_release_event",
                GTK_SIGNAL_FUNC (key_release_cb),
                entry->canvas);

    gtk_object_ref (GTK_OBJECT (entry->priv->completion_view_popup));
    gtk_object_sink (GTK_OBJECT (entry->priv->completion_view_popup));
    gtk_window_set_policy (GTK_WINDOW (entry->priv->completion_view_popup), TRUE, TRUE, TRUE);
    gtk_container_add (GTK_CONTAINER (entry->priv->completion_view_popup), entry->priv->completion_view);
    gtk_widget_show (entry->priv->completion_view);

    e_completion_view_connect_keys (
        E_COMPLETION_VIEW (entry->priv->completion_view),
        GTK_WIDGET (entry->canvas));
}

/** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** **/

static void
et_get_arg (GtkObject *o, GtkArg *arg, guint arg_id)
{
    EEntry *entry = E_ENTRY (o);
    GtkObject *item = GTK_OBJECT (entry->item);
    
    switch (arg_id){
    case ARG_MODEL:
        gtk_object_get(item,
                   "model", &GTK_VALUE_OBJECT (*arg),
                   NULL);
        break;

    case ARG_EVENT_PROCESSOR:
        gtk_object_get(item,
                   "event_processor", &GTK_VALUE_OBJECT (*arg),
                   NULL);
        break;

    case ARG_TEXT:
        gtk_object_get(item,
                   "text", &GTK_VALUE_STRING (*arg),
                   NULL);
        break;

    case ARG_FONT_GDK:
        gtk_object_get(item,
                   "font_gdk", &GTK_VALUE_BOXED (*arg),
                   NULL);
        break;

    case ARG_JUSTIFICATION:
        gtk_object_get(item,
                   "justification", &GTK_VALUE_ENUM (*arg),
                   NULL);
        break;

    case ARG_FILL_COLOR_GDK:
        gtk_object_get(item,
                   "fill_color_gdk", &GTK_VALUE_BOXED (*arg),
                   NULL);
        break;

    case ARG_FILL_COLOR_RGBA:
        gtk_object_get(item,
                   "fill_color_rgba", &GTK_VALUE_UINT (*arg),
                   NULL);
        break;

    case ARG_FILL_STIPPLE:
        gtk_object_get(item,
                   "fill_stiple", &GTK_VALUE_BOXED (*arg),
                   NULL);
        break;

    case ARG_EDITABLE:
        gtk_object_get(item,
                   "editable", &GTK_VALUE_BOOL (*arg),
                   NULL);
        break;

    case ARG_USE_ELLIPSIS:
        gtk_object_get(item,
                   "use_ellipsis", &GTK_VALUE_BOOL (*arg),
                   NULL);
        break;

    case ARG_ELLIPSIS:
        gtk_object_get(item,
                   "ellipsis", &GTK_VALUE_STRING (*arg),
                   NULL);
        break;

    case ARG_LINE_WRAP:
        gtk_object_get(item,
                   "line_wrap", &GTK_VALUE_BOOL (*arg),
                   NULL);
        break;
        
    case ARG_BREAK_CHARACTERS:
        gtk_object_get(item,
                   "break_characters", &GTK_VALUE_STRING (*arg),
                   NULL);
        break;

    case ARG_MAX_LINES:
        gtk_object_get(item,
                   "max_lines", &GTK_VALUE_INT (*arg),
                   NULL);
        break;
    case ARG_ALLOW_NEWLINES:
        gtk_object_get(item,
                   "allow_newlines", &GTK_VALUE_BOOL (*arg),
                   NULL);
        break;

    case ARG_DRAW_BORDERS:
        GTK_VALUE_BOOL (*arg) = entry->priv->draw_borders;
        break;

    case ARG_DRAW_BACKGROUND:
        gtk_object_get (item,
                "draw_background", &GTK_VALUE_BOOL (*arg),
                NULL);
        break;

    case ARG_CURSOR_POS:
        gtk_object_get (item,
                "cursor_pos", &GTK_VALUE_INT (*arg),
                NULL);
        
    default:
        arg->type = GTK_TYPE_INVALID;
        break;
    }
}

static void
et_set_arg (GtkObject *o, GtkArg *arg, guint arg_id)
{
    EEntry *entry = E_ENTRY (o);
    GtkObject *item = GTK_OBJECT (entry->item);
    GtkAnchorType anchor;
    double width, height;
    gint xthick;
    gint ythick;
    GtkWidget *widget = GTK_WIDGET(entry->canvas);
    
    switch (arg_id){
    case ARG_MODEL:
        gtk_object_set(item,
                   "model", GTK_VALUE_OBJECT (*arg),
                   NULL);
        break;

    case ARG_EVENT_PROCESSOR:
        gtk_object_set(item,
                   "event_processor", GTK_VALUE_OBJECT (*arg),
                   NULL);
        break;

    case ARG_TEXT:

        gtk_object_set(item,
                   "text", GTK_VALUE_STRING (*arg),
                   NULL);
        break;

    case ARG_FONT:
        gtk_object_set(item,
                   "font", GTK_VALUE_STRING (*arg),
                   NULL);
        break;

    case ARG_FONTSET:
        gtk_object_set(item,
                   "fontset", GTK_VALUE_STRING (*arg),
                   NULL);
        break;

    case ARG_FONT_GDK:
        gtk_object_set(item,
                   "font_gdk", GTK_VALUE_BOXED (*arg),
                   NULL);
        break;

    case ARG_JUSTIFICATION:
        entry->priv->justification = GTK_VALUE_ENUM (*arg);
        gtk_object_get(item,
                   "clip_width", &width,
                   "clip_height", &height,
                   NULL);

        if (entry->priv->draw_borders) {
            xthick = 0;
            ythick = 0;
        } else {
            xthick = widget->style->klass->xthickness;
            ythick = widget->style->klass->ythickness;
        }

        switch (entry->priv->justification) {
        case GTK_JUSTIFY_CENTER:
            anchor = GTK_ANCHOR_N;
            e_canvas_item_move_absolute(GNOME_CANVAS_ITEM(entry->item), width / 2, ythick);
            break;
        case GTK_JUSTIFY_RIGHT:
            anchor = GTK_ANCHOR_NE;
            e_canvas_item_move_absolute(GNOME_CANVAS_ITEM(entry->item), width - xthick, ythick);
            break;
        default:
            anchor = GTK_ANCHOR_NW;
            e_canvas_item_move_absolute(GNOME_CANVAS_ITEM(entry->item), xthick, ythick);
            break;
        }
        gtk_object_set(item,
                   "justification", entry->priv->justification,
                   "anchor", anchor,
                   NULL);
        break;

    case ARG_FILL_COLOR:
        gtk_object_set(item,
                   "fill_color", GTK_VALUE_STRING (*arg),
                   NULL);
        break;

    case ARG_FILL_COLOR_GDK:
        gtk_object_set(item,
                   "fill_color_gdk", GTK_VALUE_BOXED (*arg),
                   NULL);
        break;

    case ARG_FILL_COLOR_RGBA:
        gtk_object_set(item,
                   "fill_color_rgba", GTK_VALUE_UINT (*arg),
                   NULL);
        break;

    case ARG_FILL_STIPPLE:
        gtk_object_set(item,
                   "fill_stiple", GTK_VALUE_BOXED (*arg),
                   NULL);
        break;

    case ARG_EDITABLE:
        gtk_object_set(item,
                   "editable", GTK_VALUE_BOOL (*arg),
                   NULL);
        break;

    case ARG_USE_ELLIPSIS:
        gtk_object_set(item,
                   "use_ellipsis", GTK_VALUE_BOOL (*arg),
                   NULL);
        break;

    case ARG_ELLIPSIS:
        gtk_object_set(item,
                   "ellipsis", GTK_VALUE_STRING (*arg),
                   NULL);
        break;

    case ARG_LINE_WRAP:
        gtk_object_set(item,
                   "line_wrap", GTK_VALUE_BOOL (*arg),
                   NULL);
        break;
        
    case ARG_BREAK_CHARACTERS:
        gtk_object_set(item,
                   "break_characters", GTK_VALUE_STRING (*arg),
                   NULL);
        break;

    case ARG_MAX_LINES:
        gtk_object_set(item,
                   "max_lines", GTK_VALUE_INT (*arg),
                   NULL);
        break;

    case ARG_ALLOW_NEWLINES:
        gtk_object_set(item,
                   "allow_newlines", GTK_VALUE_BOOL (*arg),
                   NULL);
        break;

    case ARG_DRAW_BORDERS: {
        gboolean need_queue;
        
        need_queue = (entry->priv->draw_borders ^ GTK_VALUE_BOOL (*arg));
        gtk_object_set (item, "draw_borders", GTK_VALUE_BOOL (*arg), NULL);
        entry->priv->draw_borders = GTK_VALUE_BOOL (*arg);
        if (need_queue)
            gtk_widget_queue_resize (GTK_WIDGET (entry));
        break;
    }

    case ARG_CURSOR_POS:
        gtk_object_set (item,
                "cursor_pos", GTK_VALUE_INT (*arg), NULL);
        break;
        
    case ARG_DRAW_BACKGROUND:
        gtk_object_set (item, "draw_background",
                GTK_VALUE_BOOL (*arg), NULL);
        break;
    }
}

static void
e_entry_destroy (GtkObject *object)
{
    EEntry *entry = E_ENTRY (object);

    if (entry->priv->completion_delay_tag)
        gtk_timeout_remove (entry->priv->completion_delay_tag);

    if (entry->priv->completion)
        gtk_object_unref (GTK_OBJECT (entry->priv->completion));
    if (entry->priv->completion_view_popup)
        gtk_widget_destroy (entry->priv->completion_view_popup);
    g_free (entry->priv->pre_browse_text);

    if (entry->priv->changed_since_keypress_tag)
        gtk_timeout_remove (entry->priv->changed_since_keypress_tag);

    if (entry->priv->ptr_grab)
        gdk_pointer_ungrab (GDK_CURRENT_TIME);

    g_free (entry->priv);
    entry->priv = NULL;
}

static void
e_entry_class_init (GtkObjectClass *object_class)
{
    EEntryClass *klass = E_ENTRY_CLASS(object_class);

    parent_class = gtk_type_class (PARENT_TYPE);

    object_class->set_arg = et_set_arg;
    object_class->get_arg = et_get_arg;
    object_class->destroy = e_entry_destroy;

    klass->changed = NULL;
    klass->activate = NULL;

    e_entry_signals[E_ENTRY_CHANGED] = gtk_signal_new ("changed",
                               GTK_RUN_LAST,
                               object_class->type,
                               GTK_SIGNAL_OFFSET (EEntryClass, changed),
                               gtk_marshal_NONE__NONE,
                               GTK_TYPE_NONE, 0);

    e_entry_signals[E_ENTRY_ACTIVATE] = gtk_signal_new ("activate",
                                GTK_RUN_LAST,
                                object_class->type,
                                GTK_SIGNAL_OFFSET (EEntryClass, activate),
                                gtk_marshal_NONE__NONE,
                                GTK_TYPE_NONE, 0);

    e_entry_signals[E_ENTRY_POPUP] = gtk_signal_new ("popup",
                             GTK_RUN_LAST,
                             object_class->type,
                             GTK_SIGNAL_OFFSET (EEntryClass, popup),
                             gtk_marshal_NONE__POINTER_INT,
                             GTK_TYPE_NONE, 2, GTK_TYPE_POINTER, GTK_TYPE_INT);


    gtk_object_class_add_signals (object_class, e_entry_signals, E_ENTRY_LAST_SIGNAL);

    gtk_object_add_arg_type ("EEntry::model",
                 GTK_TYPE_OBJECT, GTK_ARG_READWRITE, ARG_MODEL);  
    gtk_object_add_arg_type ("EEntry::event_processor",
                 GTK_TYPE_OBJECT, GTK_ARG_READWRITE, ARG_EVENT_PROCESSOR);
    gtk_object_add_arg_type ("EEntry::text",
                 GTK_TYPE_STRING, GTK_ARG_READWRITE, ARG_TEXT);
    gtk_object_add_arg_type ("EEntry::font",
                 GTK_TYPE_STRING, GTK_ARG_WRITABLE, ARG_FONT);
    gtk_object_add_arg_type ("EEntry::fontset",
                 GTK_TYPE_STRING, GTK_ARG_WRITABLE, ARG_FONTSET);
    gtk_object_add_arg_type ("EEntry::font_gdk",
                 GTK_TYPE_GDK_FONT, GTK_ARG_READWRITE, ARG_FONT_GDK);
    gtk_object_add_arg_type ("EEntry::justification",
                 GTK_TYPE_JUSTIFICATION, GTK_ARG_READWRITE, ARG_JUSTIFICATION);
    gtk_object_add_arg_type ("EEntry::fill_color",
                 GTK_TYPE_STRING, GTK_ARG_WRITABLE, ARG_FILL_COLOR);
    gtk_object_add_arg_type ("EEntry::fill_color_gdk",
                 GTK_TYPE_GDK_COLOR, GTK_ARG_READWRITE, ARG_FILL_COLOR_GDK);
    gtk_object_add_arg_type ("EEntry::fill_color_rgba",
                 GTK_TYPE_UINT, GTK_ARG_READWRITE, ARG_FILL_COLOR_RGBA);
    gtk_object_add_arg_type ("EEntry::fill_stipple",
                 GTK_TYPE_GDK_WINDOW, GTK_ARG_READWRITE, ARG_FILL_STIPPLE);
    gtk_object_add_arg_type ("EEntry::editable",
                 GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_EDITABLE);
    gtk_object_add_arg_type ("EEntry::use_ellipsis",
                 GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_USE_ELLIPSIS);
    gtk_object_add_arg_type ("EEntry::ellipsis",
                 GTK_TYPE_STRING, GTK_ARG_READWRITE, ARG_ELLIPSIS);
    gtk_object_add_arg_type ("EEntry::line_wrap",
                 GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_LINE_WRAP);
    gtk_object_add_arg_type ("EEntry::break_characters",
                 GTK_TYPE_STRING, GTK_ARG_READWRITE, ARG_BREAK_CHARACTERS);
    gtk_object_add_arg_type ("EEntry::max_lines",
                 GTK_TYPE_INT, GTK_ARG_READWRITE, ARG_MAX_LINES);
    gtk_object_add_arg_type ("EEntry::allow_newlines",
                 GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_ALLOW_NEWLINES);
    gtk_object_add_arg_type ("EEntry::draw_borders",
                 GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_DRAW_BORDERS);
    gtk_object_add_arg_type ("EEntry::draw_background",
                 GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_DRAW_BACKGROUND);
    gtk_object_add_arg_type ("EEntry::cursor_pos",
                 GTK_TYPE_INT, GTK_ARG_READWRITE, ARG_CURSOR_POS);
}

E_MAKE_TYPE(e_entry, "EEntry", EEntry, e_entry_class_init, e_entry_init, PARENT_TYPE);