index : dexon-solidity	develop release
	DEXON fork of Solidity (https://github.com/dexon-foundation/dsolidity)

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path: root/libsolidity/ast/ASTAnnotations.h

	Commit message (Expand)	Author	Age	Files	Lines
*	make use of C++ `= default` constructor declarations as well as more non-stat...	Christian Parpart	2018-12-19	1	-2/+2
*	Sort includes in libsolidity/ast	Leonardo Alt	2018-12-17	1	-1/+1
*	Isolating libyul library API into its own namespace `yul`.	Christian Parpart	2018-11-23	1	-8/+8
*	Disallow multi variable declarations with mismatching number of values.	Daniel Kirchner	2018-07-13	1	-7/+0
*	Move constructor argument override check to TypeChecker and reuse annotations...	Daniel Kirchner	2018-04-09	1	-0/+3
*	Store super function.	chriseth	2017-09-06	1	-0/+3
*	Introduce ExperimentalFeatures header	Alex Beregszaszi	2017-08-10	1	-2/+3
*	Support experimental feature pragma	Alex Beregszaszi	2017-08-10	1	-0/+2
*	Constructors must be implemented if declared.	Alex Beregszaszi	2017-08-05	1	-2/+1
*	Replace isFullyImplemented with unimplementedFunctions in ASTAnnotations	Alex Beregszaszi	2017-08-04	1	-2/+3
*	refactoring functionCallAnnotation	djudjuu	2017-05-19	1	-4/+9
*	Refactor to combined scope and stack height info.	chriseth	2017-04-26	1	-6/+6
*	Storage access from inline assembly.	chriseth	2017-04-25	1	-0/+2
*	Move analysis out of code generator.	chriseth	2017-04-25	1	-0/+4
*	Split external identifier access into resolving and code generation.	chriseth	2017-04-25	1	-2/+8
*	Type checking for pure expressions.	chriseth	2017-03-13	1	-0/+2
*	Move public constructor property into AST itself.	chriseth	2017-03-06	1	-2/+0
*	Check if constructor is public or not.	chriseth	2017-01-21	1	-0/+2
*	Improve error message when trying to modify constant variables	Federico Bond	2016-12-13	1	-0/+2
*	Fix licensing headers	VoR0220	2016-11-23	1	-4/+4
*	Code generation (missing external access and source locations).	chriseth	2016-03-30	1	-0/+11
*	Simple aliasing during import.	chriseth	2015-12-18	1	-0/+10
*	Relative paths in import directives.	chriseth	2015-12-10	1	-0/+6
*	Make members context-sensitive.	chriseth	2015-11-26	1	-3/+0
*	Allow "new expressions" also for general type names.	chriseth	2015-11-26	1	-0/+3
*	Allow docstrings for statements.	chriseth	2015-10-27	1	-2/+6
*	Store docstrings in AST annotations.	chriseth	2015-10-26	1	-1/+26
*	File reorganisation.	chriseth	2015-10-21	1	-0/+140

generated by cgit (git 2.34.1) at 2024-11-17 14:58:49 +0800

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

/*
 * Author :
 *  Damon Chaplin <damon@helixcode.com>
 *
 * Copyright 2000, Helix Code, Inc.
 *
 * Based on the GnomeDateEdit, part of the Gnome Library.
 * Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation
 *
 * 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
 */

/*
 * EDateEdit - a widget based on GnomeDateEdit to provide a date & optional
 * time field with popups for entering a date.
 */

/* We need this for strptime. */
#define _XOPEN_SOURCE 4

#include <config.h>
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <gtk/gtkmain.h>
#include "e-dateedit.h"
#include "e-calendar.h"

#include <gdk/gdkkeysyms.h>
#include <gtk/gtkoptionmenu.h>
#include <gtk/gtkframe.h>
#include <gtk/gtkarrow.h>
#include <gtk/gtklabel.h>
#include <gtk/gtkentry.h>
#include <gtk/gtkmenu.h>
#include <gtk/gtkmenuitem.h>
#include <gtk/gtkwindow.h>


struct _EDateEditPrivate {
    GtkWidget *date_entry;
    GtkWidget *date_button;
    
    GtkWidget *space;

    GtkWidget *time_combo;

    GtkWidget *cal_popup;
    GtkWidget *calendar;
    GtkWidget *now_button;
    GtkWidget *today_button;
    GtkWidget *none_button;     /* This will only be visible if a
                       'None' date/time is permitted. */

    gboolean show_date;
    gboolean show_time;
    gboolean use_24_hour_format;

    /* This is the range of hours we show in the time popup. */
    gint lower_hour;
    gint upper_hour;

    /* This indicates whether the last date committed was invalid.
       (A date is committed by hitting Return, moving the keyboard focus,
       or selecting a date in the popup). Note that this only indicates
       that the date couldn't be parsed. A date set to 'None' is valid
       here, though e_date_edit_date_is_valid() will return FALSE if an
       empty date isn't actually permitted. */
    gboolean date_is_valid;

    /* This is the last valid date which was set. If the date was set to
       'None' or empty, date_set_to_none will be TRUE and the other fields
       are undefined, so don't use them. */
    gboolean date_set_to_none;
    gint year;
    gint month;
    gint day;

    /* This indicates whether the last time committed was invalid.
       (A time is committed by hitting Return, moving the keyboard focus,
       or selecting a time in the popup). Note that this only indicates
       that the time couldn't be parsed. An empty/None time is valid
       here, though e_date_edit_time_is_valid() will return FALSE if an
       empty time isn't actually permitted. */
    gboolean time_is_valid;

    /* This is the last valid time which was set. If the time was set to
       'None' or empty, time_set_to_none will be TRUE and the other fields
       are undefined, so don't use them. */
    gboolean time_set_to_none;
    gint hour;
    gint minute;
};

enum {
    CHANGED,
    LAST_SIGNAL
};


static gint date_edit_signals [LAST_SIGNAL] = { 0 };


static void e_date_edit_class_init      (EDateEditClass *class);
static void e_date_edit_init            (EDateEdit  *dedit);
static void create_children         (EDateEdit  *dedit);
static void e_date_edit_destroy         (GtkObject  *object);
static void e_date_edit_forall          (GtkContainer   *container,
                         gboolean    include_internals,
                         GtkCallback     callback,
                         gpointer    callback_data);

static gint on_date_entry_key_press     (GtkWidget  *widget,
                         GdkEventKey    *event,
                         EDateEdit  *dedit);
static void on_date_button_clicked      (GtkWidget  *widget,
                         EDateEdit  *dedit);
static void e_date_edit_show_date_popup     (EDateEdit  *dedit);
static void position_date_popup         (EDateEdit  *dedit);
static void on_date_popup_none_button_clicked   (GtkWidget  *button,
                         EDateEdit  *dedit);
static void on_date_popup_today_button_clicked  (GtkWidget  *button,
                         EDateEdit  *dedit);
static void on_date_popup_now_button_clicked    (GtkWidget  *button,
                         EDateEdit  *dedit);
static gint on_date_popup_delete_event      (GtkWidget  *widget,
                         EDateEdit  *dedit);
static gint on_date_popup_key_press     (GtkWidget  *widget,
                         GdkEventKey    *event,
                         EDateEdit  *dedit);
static gint on_date_popup_button_press      (GtkWidget  *widget,
                         GdkEventButton *event,
                         gpointer    data);
static void on_date_popup_date_selected     (ECalendarItem  *calitem,
                         EDateEdit  *dedit);
static void hide_date_popup         (EDateEdit  *dedit);
static void rebuild_time_popup          (EDateEdit  *dedit);
static gboolean field_set_to_none       (char       *text);
static gboolean e_date_edit_parse_date      (EDateEdit  *dedit,
                         char       *date_text,
                         struct tm  *date_tm);
static gboolean e_date_edit_parse_time      (EDateEdit  *dedit,
                         gchar      *time_text,
                         struct tm  *time_tm);
static void on_date_edit_time_selected      (GtkList    *list,
                         EDateEdit  *dedit);
static gint on_time_entry_key_press     (GtkWidget  *widget,
                         GdkEventKey    *event,
                         EDateEdit  *dedit);
static gint on_date_entry_focus_out     (GtkEntry   *entry,
                         GdkEventFocus  *event,
                         EDateEdit  *dedit);
static gint on_time_entry_focus_out     (GtkEntry   *entry,
                         GdkEventFocus  *event,
                         EDateEdit  *dedit);
static void e_date_edit_update_date_entry   (EDateEdit  *dedit);
static void e_date_edit_update_time_entry   (EDateEdit  *dedit);
static void e_date_edit_update_time_combo_state (EDateEdit  *dedit);
static void e_date_edit_check_date_changed  (EDateEdit  *dedit);
static void e_date_edit_check_time_changed  (EDateEdit  *dedit);
static gboolean e_date_edit_set_date_internal   (EDateEdit  *dedit,
                         gboolean    valid,
                         gboolean    none,
                         gint        year,
                         gint        month,
                         gint        day);
static gboolean e_date_edit_set_time_internal   (EDateEdit  *dedit,
                         gboolean    valid,
                         gboolean    none,
                         gint        hour,
                         gint        minute);


static GtkHBoxClass *parent_class;

/**
 * e_date_edit_get_type:
 *
 * Returns the GtkType for the EDateEdit widget
 */
guint
e_date_edit_get_type        (void)
{
    static guint date_edit_type = 0;

    if (!date_edit_type){
        GtkTypeInfo date_edit_info = {
            "EDateEdit",
            sizeof (EDateEdit),
            sizeof (EDateEditClass),
            (GtkClassInitFunc) e_date_edit_class_init,
            (GtkObjectInitFunc) e_date_edit_init,
            NULL,
            NULL,
        };

        date_edit_type = gtk_type_unique (gtk_hbox_get_type (), &date_edit_info);
    }
    
    return date_edit_type;
}


static void
e_date_edit_class_init      (EDateEditClass *class)
{
    GtkObjectClass *object_class = (GtkObjectClass *) class;
    GtkContainerClass *container_class = (GtkContainerClass *) class;

    object_class = (GtkObjectClass*) class;

    parent_class = gtk_type_class (gtk_hbox_get_type ());

    date_edit_signals [CHANGED] =
        gtk_signal_new ("changed",
                GTK_RUN_FIRST, object_class->type,
                GTK_SIGNAL_OFFSET (EDateEditClass,
                           changed),
                gtk_signal_default_marshaller,
                GTK_TYPE_NONE, 0);
    
    gtk_object_class_add_signals (object_class, date_edit_signals,
                      LAST_SIGNAL);

    object_class->destroy       = e_date_edit_destroy;

    container_class->forall     = e_date_edit_forall;

    class->changed = NULL;
}


static void
e_date_edit_init        (EDateEdit  *dedit)
{
    EDateEditPrivate *priv;

    dedit->priv = priv = g_new0 (EDateEditPrivate, 1);

    priv->show_date = TRUE;
    priv->show_time = TRUE;
    priv->use_24_hour_format = TRUE;

    priv->lower_hour = 0;
    priv->upper_hour = 24;

    priv->date_is_valid = TRUE;
    priv->date_set_to_none = TRUE;
    priv->time_is_valid = TRUE;
    priv->time_set_to_none = TRUE;

    create_children (dedit);

    /* Set it to the current time. */
    e_date_edit_set_time (dedit, 0);
}


/**
 * e_date_edit_new:
 *
 * Description: Creates a new #EDateEdit widget which can be used
 * to provide an easy to use way for entering dates and times.
 * 
 * Returns: a new #EDateEdit widget.
 */
GtkWidget *
e_date_edit_new         (void)
{
    EDateEdit *dedit;

    dedit = gtk_type_new (e_date_edit_get_type ());

    return GTK_WIDGET (dedit);
}


static void
create_children         (EDateEdit  *dedit)
{
    EDateEditPrivate *priv;
    ECalendar *calendar;
    GtkWidget *frame, *arrow;
    GtkWidget *vbox, *bbox;

    priv = dedit->priv;

    priv->date_entry  = gtk_entry_new ();
    gtk_widget_set_usize (priv->date_entry, 90, 0);
    gtk_box_pack_start (GTK_BOX (dedit), priv->date_entry, FALSE, TRUE, 0);
    
    gtk_signal_connect (GTK_OBJECT (priv->date_entry), "key_press_event",
                (GtkSignalFunc) on_date_entry_key_press,
                dedit);
    gtk_signal_connect_after (GTK_OBJECT (priv->date_entry),
                  "focus_out_event",
                  (GtkSignalFunc) on_date_entry_focus_out,
                  dedit);

    priv->date_button = gtk_button_new ();
    gtk_signal_connect (GTK_OBJECT (priv->date_button), "clicked",
                GTK_SIGNAL_FUNC (on_date_button_clicked), dedit);
    gtk_box_pack_start (GTK_BOX (dedit), priv->date_button,
                FALSE, FALSE, 0);

    arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_OUT);
    gtk_container_add (GTK_CONTAINER (priv->date_button), arrow);
    gtk_widget_show (arrow);

    if (priv->show_date) {
        gtk_widget_show (priv->date_entry);
        gtk_widget_show (priv->date_button);
    }

    /* This is just to create a space between the date & time parts. */
    priv->space = gtk_drawing_area_new ();
    gtk_box_pack_start (GTK_BOX (dedit), priv->space, FALSE, FALSE, 2);


    priv->time_combo = gtk_combo_new ();
    gtk_widget_set_usize (GTK_COMBO (priv->time_combo)->entry, 90, 0);
    gtk_box_pack_start (GTK_BOX (dedit), priv->time_combo, FALSE, TRUE, 0);
    rebuild_time_popup (dedit);

    gtk_signal_connect (GTK_OBJECT (GTK_COMBO (priv->time_combo)->entry),
                "key_press_event",
                (GtkSignalFunc) on_time_entry_key_press,
                dedit);
    gtk_signal_connect_after (GTK_OBJECT (GTK_COMBO (priv->time_combo)->entry),
                  "focus_out_event",
                  (GtkSignalFunc) on_time_entry_focus_out,
                  dedit);
    gtk_signal_connect_after (GTK_OBJECT (GTK_COMBO (priv->time_combo)->list),
                  "selection_changed",
                  (GtkSignalFunc) on_date_edit_time_selected,
                  dedit);

    if (priv->show_time)
        gtk_widget_show (priv->time_combo);

    if (priv->show_date && priv->show_time)
        gtk_widget_show (priv->space);

    priv->cal_popup = gtk_window_new (GTK_WINDOW_POPUP);
    gtk_widget_set_events (priv->cal_popup,
                   gtk_widget_get_events (priv->cal_popup)
                   | GDK_KEY_PRESS_MASK);
    gtk_signal_connect (GTK_OBJECT (priv->cal_popup), "delete_event",
                (GtkSignalFunc) on_date_popup_delete_event,
                dedit);
    gtk_signal_connect (GTK_OBJECT (priv->cal_popup), "key_press_event",
                (GtkSignalFunc) on_date_popup_key_press,
                dedit);
    gtk_signal_connect (GTK_OBJECT (priv->cal_popup), "button_press_event",
                (GtkSignalFunc) on_date_popup_button_press,
                dedit);
    gtk_window_set_policy (GTK_WINDOW (priv->cal_popup),
                   FALSE, FALSE, TRUE);

    frame = gtk_frame_new (NULL);
    gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT);
    gtk_container_add (GTK_CONTAINER (priv->cal_popup), frame);
    gtk_widget_show (frame);

    vbox = gtk_vbox_new (FALSE, 0);
    gtk_container_add (GTK_CONTAINER (frame), vbox);
        gtk_widget_show (vbox);

    priv->calendar = e_calendar_new ();
    calendar = E_CALENDAR (priv->calendar);
    gnome_canvas_item_set (GNOME_CANVAS_ITEM (calendar->calitem),
                   "maximum_days_selected", 1,
                   "move_selection_when_moving", FALSE,
                   NULL);

    gtk_signal_connect (GTK_OBJECT (calendar->calitem),
                "selection_changed",
                GTK_SIGNAL_FUNC (on_date_popup_date_selected), dedit);

    gtk_box_pack_start (GTK_BOX (vbox), priv->calendar, FALSE, FALSE, 0);
        gtk_widget_show (priv->calendar);

    bbox = gtk_hbutton_box_new ();
    gtk_container_set_border_width (GTK_CONTAINER (bbox), 4);
    gtk_button_box_set_spacing (GTK_BUTTON_BOX (bbox), 2);
    gtk_button_box_set_child_ipadding (GTK_BUTTON_BOX (bbox), 2, 0);
    gtk_button_box_set_child_size (GTK_BUTTON_BOX (bbox), 0, 0);
    gtk_box_pack_start (GTK_BOX (vbox), bbox, FALSE, FALSE, 0);
        gtk_widget_show (bbox);

    priv->now_button = gtk_button_new_with_label (_("Now"));
    gtk_container_add (GTK_CONTAINER (bbox), priv->now_button);
        gtk_widget_show (priv->now_button);
    gtk_signal_connect (GTK_OBJECT (priv->now_button), "clicked",
                GTK_SIGNAL_FUNC (on_date_popup_now_button_clicked), dedit);

    priv->today_button = gtk_button_new_with_label (_("Today"));
    gtk_container_add (GTK_CONTAINER (bbox), priv->today_button);
        gtk_widget_show (priv->today_button);
    gtk_signal_connect (GTK_OBJECT (priv->today_button), "clicked",
                GTK_SIGNAL_FUNC (on_date_popup_today_button_clicked), dedit);

    /* Note that we don't show this here, since by default a 'None' date
       is not permitted. */
    priv->none_button = gtk_button_new_with_label (_("None"));
    gtk_container_add (GTK_CONTAINER (bbox), priv->none_button);
    gtk_signal_connect (GTK_OBJECT (priv->none_button), "clicked",
                GTK_SIGNAL_FUNC (on_date_popup_none_button_clicked), dedit);
}


static void
e_date_edit_destroy     (GtkObject  *object)
{
    EDateEdit *dedit;

    g_return_if_fail (E_IS_DATE_EDIT (object));

    dedit = E_DATE_EDIT (object);

    gtk_widget_destroy (dedit->priv->cal_popup);
    dedit->priv->cal_popup = NULL;

    g_free (dedit->priv);
    dedit->priv = NULL;

    if (GTK_OBJECT_CLASS (parent_class)->destroy)
        (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}


static void
e_date_edit_forall      (GtkContainer   *container,
                 gboolean    include_internals,
                 GtkCallback     callback,
                 gpointer    callback_data)
{
    g_return_if_fail (E_IS_DATE_EDIT (container));
    g_return_if_fail (callback != NULL);

    /* Let GtkBox handle the internal widgets if needed. */
    if (include_internals) {
        if (GTK_CONTAINER_CLASS (parent_class)->forall)
            (* GTK_CONTAINER_CLASS (parent_class)->forall)
                (container, include_internals,
                 callback, callback_data);
    }
}


/**
 * e_date_edit_get_time:
 * @dedit: an #EDateEdit widget.
 * @the_time: returns the last valid time entered.
 * @Returns: the last valid time entered, or -1 if the time is not set.
 *
 * Returns the last valid time entered. If empty times are valid, by calling
 * e_date_edit_set_allow_no_date_set(), then it may return -1.
 *
 * Note that the last time entered may actually have been invalid. You can
 * check this with e_date_edit_time_is_valid().
 */
time_t
e_date_edit_get_time        (EDateEdit  *dedit)
{
    EDateEditPrivate *priv;
    struct tm tmp_tm = { 0 };

    g_return_val_if_fail (E_IS_DATE_EDIT (dedit), -1);
    
    priv = dedit->priv;

    /* Try to parse any new value now. */
    e_date_edit_check_date_changed (dedit);
    e_date_edit_check_time_changed (dedit);

    if (priv->date_set_to_none)
        return -1;

    tmp_tm.tm_year = priv->year;
    tmp_tm.tm_mon = priv->month;
    tmp_tm.tm_mday = priv->day;

    if (!priv->show_time || priv->time_set_to_none) {
        tmp_tm.tm_hour = 0;
        tmp_tm.tm_min = 0;
    } else {
        tmp_tm.tm_hour = priv->hour;
        tmp_tm.tm_min = priv->minute;
    }
    tmp_tm.tm_sec = 0;
    tmp_tm.tm_isdst = -1;

    return mktime (&tmp_tm);
}


/**
 * e_date_edit_set_time:
 * @dedit: the EDateEdit widget
 * @the_time: The time and date that should be set on the widget
 *
 * Description:  Changes the displayed date and time in the EDateEdit
 * widget to be the one represented by @the_time.  If @the_time is 0
 * then current time is used. If it is -1, then the date is set to None.
 */
void
e_date_edit_set_time        (EDateEdit  *dedit,
                 time_t      the_time)
{
    EDateEditPrivate *priv;
    struct tm *tmp_tm;
    gboolean date_changed = FALSE, time_changed = FALSE;

    g_return_if_fail (E_IS_DATE_EDIT (dedit));

    priv = dedit->priv;

    if (the_time == -1) {
        date_changed = e_date_edit_set_date_internal (dedit, TRUE,
                                  TRUE, 0, 0, 0);
        time_changed = e_date_edit_set_time_internal (dedit, TRUE,
                                  TRUE, 0, 0);
    } else {
        if (the_time == 0)
            the_time = time (NULL);

        tmp_tm = localtime (&the_time);

        date_changed = e_date_edit_set_date_internal (dedit, TRUE,
                                  FALSE,
                                  tmp_tm->tm_year,
                                  tmp_tm->tm_mon,
                                  tmp_tm->tm_mday);
        time_changed = e_date_edit_set_time_internal (dedit, TRUE,
                                  FALSE,
                                  tmp_tm->tm_hour,
                                  tmp_tm->tm_min);
    }

    e_date_edit_update_date_entry (dedit);
    e_date_edit_update_time_entry (dedit);
    e_date_edit_update_time_combo_state (dedit);

    /* Emit the signals if the date and/or time has actually changed. */
    if (date_changed || time_changed)
        gtk_signal_emit (GTK_OBJECT (dedit),
                 date_edit_signals [CHANGED]);
}


/**
 * e_date_edit_get_date:
 * @dedit: an #EDateEdit widget.
 * @year: returns the year set.
 * @month: returns the month set (1 - 12).
 * @day: returns the day set (1 - 31).
 * @Returns: TRUE if a time was set, or FALSE if the field is empty or 'None'.
 *
 * Returns the last valid date entered into the date field.
 */
gboolean
e_date_edit_get_date        (EDateEdit  *dedit,
                 gint       *year,
                 gint       *month,
                 gint       *day)
{
    EDateEditPrivate *priv;

    g_return_val_if_fail (E_IS_DATE_EDIT (dedit), FALSE);

    priv = dedit->priv;

    /* Try to parse any new value now. */
    e_date_edit_check_date_changed (dedit);

    if (priv->date_set_to_none)
        return FALSE;

    *year = priv->year + 1900;
    *month = priv->month + 1;
    *day = priv->day;

    return TRUE;
}


/**
 * e_date_edit_set_date:
 * @dedit: an #EDateEdit widget.
 * @year: the year to set.
 * @month: the month to set (1 - 12).
 * @day: the day to set (1 - 31).
 *
 * Sets the date in the date field.
 */
void
e_date_edit_set_date        (EDateEdit  *dedit,
                 gint        year,
                 gint        month,
                 gint        day)
{
    EDateEditPrivate *priv;
    gboolean date_changed = FALSE;

    g_return_if_fail (E_IS_DATE_EDIT (dedit));

    priv = dedit->priv;

    date_changed = e_date_edit_set_date_internal (dedit, TRUE, FALSE,
                              year - 1900, month - 1,
                              day);

    e_date_edit_update_date_entry (dedit);
    e_date_edit_update_time_combo_state (dedit);

    /* Emit the signals if the date has actually changed. */
    if (date_changed)
        gtk_signal_emit (GTK_OBJECT (dedit),
                 date_edit_signals [CHANGED]);
}


/**
 * e_date_edit_get_time_of_day:
 * @dedit: an #EDateEdit widget.
 * @hour: returns the hour set.
 * @minute: returns the minute set.
 * @Returns: TRUE if a time was set, or FALSE if the field is empty or 'None'.
 *
 * Returns the last valid time entered into the time field.
 */
gboolean
e_date_edit_get_time_of_day     (EDateEdit  *dedit,
                     gint       *hour,
                     gint       *minute)
{
    EDateEditPrivate *priv;

    g_return_val_if_fail (E_IS_DATE_EDIT (dedit), FALSE);

    priv = dedit->priv;

    /* Try to parse any new value now. */
    e_date_edit_check_time_changed (dedit);

    if (priv->time_set_to_none)
        return FALSE;

    *hour = priv->hour;
    *minute = priv->minute;

    return TRUE;
}


/**
 * e_date_edit_set_time_of_day:
 * @dedit: an #EDateEdit widget.
 * @hour: the hour to set.
 * @minute: the minute to set.
 *
 * Description: Sets the time in the time field.
 */
void
e_date_edit_set_time_of_day     (EDateEdit  *dedit,
                     gint        hour,
                     gint        minute)
{
    EDateEditPrivate *priv;
    gboolean time_changed = FALSE;

    g_return_if_fail (E_IS_DATE_EDIT (dedit));

    priv = dedit->priv;

    if (priv->time_set_to_none
        || priv->hour != hour
        || priv->minute != minute) {
        priv->time_set_to_none = FALSE;
        priv->hour = hour;
        priv->minute = minute;
        time_changed = TRUE;
    }

    e_date_edit_update_time_entry (dedit);

    if (time_changed)
        gtk_signal_emit (GTK_OBJECT (dedit),
                 date_edit_signals [CHANGED]);
}


/**
 * e_date_edit_get_show_date:
 * @dedit: an #EDateEdit widget.
 * @Returns: Whether the date field is shown.
 *
 * Description: Returns TRUE if the date field is currently shown.
 */
gboolean
e_date_edit_get_show_date       (EDateEdit  *dedit)
{
    g_return_val_if_fail (E_IS_DATE_EDIT (dedit), TRUE);

    return dedit->priv->show_date;
}


/**
 * e_date_edit_set_show_date:
 * @dedit: an #EDateEdit widget.
 * @show_time: TRUE if the date field should be shown.
 *
 * Description: Specifies whether the date field should be shown. The date
 * field would be hidden if only a time needed to be entered.
 */
void
e_date_edit_set_show_date       (EDateEdit  *dedit,
                     gboolean    show_date)
{
    EDateEditPrivate *priv;

    g_return_if_fail (E_IS_DATE_EDIT (dedit));

    priv = dedit->priv;

    if (priv->show_date == show_date)
        return;

    priv->show_date = show_date;

    if (show_date) {
        gtk_widget_show (priv->date_entry);
        gtk_widget_show (priv->date_button);
    } else {
        gtk_widget_hide (priv->date_entry);
        gtk_widget_hide (priv->date_button);
    }

    e_date_edit_update_time_combo_state (dedit);

    if (priv->show_date && priv->show_time)
        gtk_widget_show (priv->space);
    else
        gtk_widget_hide (priv->space);
}


/**
 * e_date_edit_get_show_time:
 * @dedit: an #EDateEdit widget
 * @Returns: Whether the time field is shown.
 *
 * Description: Returns TRUE if the time field is currently shown.
 */
gboolean
e_date_edit_get_show_time       (EDateEdit  *dedit)
{
    g_return_val_if_fail (E_IS_DATE_EDIT (dedit), TRUE);

    return dedit->priv->show_time;
}


/**
 * e_date_edit_set_show_time:
 * @dedit: an #EDateEdit widget
 * @show_time: TRUE if the time field should be shown.
 *
 * Description: Specifies whether the time field should be shown. The time
 * field would be hidden if only a date needed to be entered.
 */
void
e_date_edit_set_show_time       (EDateEdit  *dedit,
                     gboolean    show_time)
{
    EDateEditPrivate *priv;

    g_return_if_fail (E_IS_DATE_EDIT (dedit));

    priv = dedit->priv;

    if (priv->show_time == show_time)
        return;

    priv->show_time = show_time;

    if (show_time) {
        gtk_widget_show (priv->time_combo);
    } else {
        gtk_widget_hide (priv->time_combo);
        gtk_widget_hide (priv->now_button);
    }

    if (priv->show_date && priv->show_time)
        gtk_widget_show (priv->space);
    else
        gtk_widget_hide (priv->space);
}


/**
 * e_date_edit_get_week_start_day:
 * @dedit: an #EDateEdit widget
 * @Returns: the week start day, from 0 (Sunday) to 6 (Saturday).
 *
 * Description: Returns the week start day currently used in the calendar
 * popup.
 */
gint
e_date_edit_get_week_start_day      (EDateEdit  *dedit)
{
    gint week_start_day;

    g_return_val_if_fail (E_IS_DATE_EDIT (dedit), 1);

    gtk_object_get (GTK_OBJECT (E_CALENDAR (dedit->priv->calendar)->calitem),
            "week_start_day", &week_start_day,
            NULL);

    return week_start_day;
}


/**
 * e_date_edit_set_week_start_day:
 * @dedit: an #EDateEdit widget
 * @week_start_day: the week start day, from 0 (Sunday) to 6 (Saturday).
 *
 * Description: Sets the week start day to use in the calendar popup.
 */
void
e_date_edit_set_week_start_day      (EDateEdit  *dedit,
                     gint        week_start_day)
{
    g_return_if_fail (E_IS_DATE_EDIT (dedit));

    gnome_canvas_item_set (GNOME_CANVAS_ITEM (E_CALENDAR (dedit->priv->calendar)->calitem),
            "week_start_day", week_start_day,
            NULL);
}


/* Whether we show week numbers in the date popup. */
gboolean
e_date_edit_get_show_week_numbers   (EDateEdit  *dedit)
{
    gboolean show_week_numbers;

    g_return_val_if_fail (E_IS_DATE_EDIT (dedit), FALSE);

    gtk_object_get (GTK_OBJECT (E_CALENDAR (dedit->priv->calendar)->calitem),
            "show_week_numbers", &show_week_numbers,
            NULL);

    return show_week_numbers;
}


void
e_date_edit_set_show_week_numbers   (EDateEdit  *dedit,
                     gboolean    show_week_numbers)
{
    g_return_if_fail (E_IS_DATE_EDIT (dedit));

    gnome_canvas_item_set (GNOME_CANVAS_ITEM (E_CALENDAR (dedit->priv->calendar)->calitem),
            "show_week_numbers", show_week_numbers,
            NULL);
}


/* Whether we use 24 hour format in the time field & popup. */
gboolean
e_date_edit_get_use_24_hour_format  (EDateEdit  *dedit)
{
    g_return_val_if_fail (E_IS_DATE_EDIT (dedit), TRUE);

    return dedit->priv->use_24_hour_format;
}


void
e_date_edit_set_use_24_hour_format  (EDateEdit  *dedit,
                     gboolean    use_24_hour_format)
{
    g_return_if_fail (E_IS_DATE_EDIT (dedit));

    if (dedit->priv->use_24_hour_format == use_24_hour_format)
        return;

    dedit->priv->use_24_hour_format = use_24_hour_format;

    rebuild_time_popup (dedit);

    e_date_edit_update_time_entry (dedit);
}


/* Whether we allow the date to be set to 'None'. e_date_edit_get_time() will
   return (time_t) -1 in this case. */
gboolean
e_date_edit_get_allow_no_date_set   (EDateEdit  *dedit)
{
    g_return_val_if_fail (E_IS_DATE_EDIT (dedit), FALSE);

    return GTK_WIDGET_VISIBLE (dedit->priv->none_button);
}


void
e_date_edit_set_allow_no_date_set   (EDateEdit  *dedit,
                     gboolean    allow_no_date_set)
{
    g_return_if_fail (E_IS_DATE_EDIT (dedit));

    if (allow_no_date_set) {
        gtk_widget_show (dedit->priv->none_button);
    } else {
        gtk_widget_hide (dedit->priv->none_button);

        /* If the date is showing, we make sure it isn't 'None' (we
           don't really mind if the time is empty), else if just the
           time is showing we make sure it isn't 'None'. */
        if (dedit->priv->show_date) {
            if (dedit->priv->date_set_to_none)
                e_date_edit_set_time (dedit, time (NULL));
        } else {
            if (dedit->priv->time_set_to_none)
                e_date_edit_set_time (dedit, time (NULL));
        }
    }
}


/* The range of time to show in the time combo popup. */
void
e_date_edit_get_time_popup_range    (EDateEdit  *dedit,
                     gint       *lower_hour,
                     gint       *upper_hour)
{
    g_return_if_fail (E_IS_DATE_EDIT (dedit));

    *lower_hour = dedit->priv->lower_hour;
    *upper_hour = dedit->priv->upper_hour;
}


void
e_date_edit_set_time_popup_range    (EDateEdit  *dedit,
                     gint        lower_hour,
                     gint        upper_hour)
{
    EDateEditPrivate *priv;

    g_return_if_fail (E_IS_DATE_EDIT (dedit));

    priv = dedit->priv;

    if (priv->lower_hour == lower_hour
        && priv->upper_hour == upper_hour)
        return;

    priv->lower_hour = lower_hour;
    priv->upper_hour = upper_hour;

    rebuild_time_popup (dedit);

    /* Setting the combo list items seems to mess up the time entry, so
       we set it again. We have to reset it to its last valid time. */
    priv->time_is_valid = TRUE;
    e_date_edit_update_time_entry (dedit);
}


/* The arrow button beside the date field has been clicked, so we show the
   popup with the ECalendar in. */
static void
on_date_button_clicked      (GtkWidget  *widget,
                 EDateEdit  *dedit)
{
    e_date_edit_show_date_popup (dedit);
}


static void
e_date_edit_show_date_popup (EDateEdit  *dedit)
{
    EDateEditPrivate *priv;
    ECalendar *calendar;
    struct tm mtm;
    gchar *date_text;
    GDate selected_day;
    gboolean clear_selection = FALSE;

    priv = dedit->priv;
    calendar = E_CALENDAR (priv->calendar);

    date_text = gtk_entry_get_text (GTK_ENTRY (priv->date_entry));
    if (field_set_to_none (date_text)
        || !e_date_edit_parse_date (dedit, date_text, &mtm))
        clear_selection = TRUE;

    if (clear_selection) {
        e_calendar_item_set_selection (calendar->calitem, NULL, NULL);
    } else {
        g_date_clear (&selected_day, 1);
        g_date_set_dmy (&selected_day, mtm.tm_mday, mtm.tm_mon + 1,
                mtm.tm_year + 1900);
        e_calendar_item_set_selection (calendar->calitem,
                           &selected_day, NULL);
    }

    /* FIXME: Hack. Change ECalendarItem so it doesn't queue signal
       emissions. */
    calendar->calitem->selection_changed = FALSE;

        position_date_popup (dedit);
    gtk_widget_show (priv->cal_popup);
    gtk_widget_grab_focus (priv->cal_popup);
    gtk_grab_add (priv->cal_popup);
    gdk_pointer_grab (priv->cal_popup->window, TRUE,
              (GDK_BUTTON_PRESS_MASK
               | GDK_BUTTON_RELEASE_MASK
               | GDK_POINTER_MOTION_MASK),
              NULL, NULL, GDK_CURRENT_TIME);
}


/* This positions the date popup below and to the left of the arrow button,
   just before it is shown. */
static void
position_date_popup     (EDateEdit  *dedit)
{
    gint x, y;
    gint bwidth, bheight;
    GtkRequisition req;
    gint screen_width, screen_height;

    gtk_widget_size_request (dedit->priv->cal_popup, &req);

    gdk_window_get_origin (dedit->priv->date_button->window, &x, &y);
    gdk_window_get_size (dedit->priv->date_button->window,
                 &bwidth, &bheight);

        screen_width = gdk_screen_width ();
    screen_height = gdk_screen_height ();

    x += bwidth - req.width;
    y += bheight;

    x = CLAMP (x, 0, MAX (0, screen_width - req.width));
    y = CLAMP (y, 0, MAX (0, screen_height - req.height));

    gtk_widget_set_uposition (dedit->priv->cal_popup, x, y);
}


/* A date has been selected in the date popup, so we set the date field
   and hide the popup. */
static void
on_date_popup_date_selected (ECalendarItem  *calitem,
                 EDateEdit  *dedit)
{
    EDateEditPrivate *priv;
    GDate start_date, end_date;

    priv = dedit->priv;

    hide_date_popup (dedit);

    if (!e_calendar_item_get_selection (calitem, &start_date, &end_date))
        return;

    e_date_edit_set_date (dedit, g_date_year (&start_date),
                  g_date_month (&start_date),
                  g_date_day (&start_date));
}


static void
on_date_popup_now_button_clicked    (GtkWidget  *button,
                     EDateEdit  *dedit)
{
    hide_date_popup (dedit);
    e_date_edit_set_time (dedit, time (NULL));
}


static void
on_date_popup_today_button_clicked  (GtkWidget  *button,
                     EDateEdit  *dedit)
{
    struct tm *tmp_tm;
    time_t t;

    hide_date_popup (dedit);

    t = time (NULL);
    tmp_tm = localtime (&t);

    e_date_edit_set_date (dedit, tmp_tm->tm_year + 1900,
                  tmp_tm->tm_mon + 1, tmp_tm->tm_mday);
}


static void
on_date_popup_none_button_clicked   (GtkWidget  *button,
                     EDateEdit  *dedit)
{
    hide_date_popup (dedit);
    e_date_edit_set_time (dedit, -1);
}


/* A key has been pressed while the date popup is showing. If it is the Escape
   key we hide the popup. */
static gint
on_date_popup_key_press         (GtkWidget  *widget,
                     GdkEventKey    *event,
                     EDateEdit  *dedit)
{
    if (event->keyval != GDK_Escape)
        return FALSE;

    gtk_signal_emit_stop_by_name (GTK_OBJECT (widget), "key_press_event");
    hide_date_popup (dedit);

    return TRUE;
}


/* A mouse button has been pressed while the date popup is showing.
   Any button press events used to select days etc. in the popup will have
   have been handled elsewhere, so here we just hide the popup.
   (This function is yanked from gtkcombo.c) */
static gint
on_date_popup_button_press  (GtkWidget  *widget,
                 GdkEventButton *event,
                 gpointer    data)
{
    EDateEdit *dedit;
    GtkWidget *child;

    dedit = data;

    child = gtk_get_event_widget ((GdkEvent *) event);

    /* We don't ask for button press events on the grab widget, so
     *  if an event is reported directly to the grab widget, it must
     *  be on a window outside the application (and thus we remove
     *  the popup window). Otherwise, we check if the widget is a child
     *  of the grab widget, and only remove the popup window if it
     *  is not.
     */
    if (child != widget) {
        while (child) {
            if (child == widget)
                return FALSE;
            child = child->parent;
        }
    }

    hide_date_popup (dedit);

    return TRUE;
}


/* A delete event has been received for the date popup, so we hide it and
   return TRUE so it doesn't get destroyed. */
static gint
on_date_popup_delete_event  (GtkWidget  *widget,
                 EDateEdit  *dedit)
{
    hide_date_popup (dedit);
    return TRUE;
}


/* Hides the date popup, removing any grabs. */
static void
hide_date_popup         (EDateEdit  *dedit)
{
    gtk_widget_hide (dedit->priv->cal_popup);
    gtk_grab_remove (dedit->priv->cal_popup);
    gdk_pointer_ungrab (GDK_CURRENT_TIME);
}


/* Clears the time popup and rebuilds it using the lower_hour, upper_hour
   and use_24_hour_format settings. */
static void
rebuild_time_popup          (EDateEdit  *dedit)
{
    EDateEditPrivate *priv;
    GtkList *list;
    GtkWidget *listitem;
    char buffer[40], *format;
    struct tm tmp_tm;
    gint hour, min;

    priv = dedit->priv;

    list = GTK_LIST (GTK_COMBO (priv->time_combo)->list);

    gtk_list_clear_items (list, 0, -1);

    /* Fill the struct tm with some sane values. */
    tmp_tm.tm_year = 2000;
    tmp_tm.tm_mon = 0;
    tmp_tm.tm_mday = 1;
    tmp_tm.tm_sec  = 0;
    tmp_tm.tm_isdst = 0;

    for (hour = priv->lower_hour; hour <= priv->upper_hour; hour++) {

        /* We don't want to display midnight at the end, since that is
           really in the next day. */
        if (hour == 24)
            break;

        /* We want to finish on upper_hour, with min == 0. */
        for (min = 0;
             min == 0 || (min < 60 && hour != priv->upper_hour);
             min += 30) {
            tmp_tm.tm_hour = hour;
            tmp_tm.tm_min  = min;

            if (priv->use_24_hour_format)
                /* This is a strftime() format. %H = hour (0-23), %M = minute. */
                format = _("%H:%M");
            else
                /* This is a strftime() format. %I = hour (1-12), %M = minute, %p = am/pm string. */
                format = _("%I:%M %p");

            strftime (buffer, sizeof (buffer), format, &tmp_tm);

            listitem = gtk_list_item_new_with_label (buffer);
            gtk_widget_show (listitem);
            gtk_container_add (GTK_CONTAINER (list), listitem);
        }
    }
}


static gboolean
e_date_edit_parse_date (EDateEdit *dedit,
            gchar     *date_text,
            struct tm *date_tm)
{
    struct tm *tmp_tm;
    time_t t;

    /* This is a strptime() format for a short date. %m = month,
       %d = day of month, %Y = year (all digits). */
    if (!strptime (date_text, _("%m/%d/%Y"), date_tm))
        return FALSE;

    /* If the user entered a 2-digit year we use the current century. */
    if (date_tm->tm_year < 0) {
        t = time (NULL);
        tmp_tm = localtime (&t);

        /* This should convert it into a value from 0 to 99. */
        date_tm->tm_year += 1900;

        /* Now add on the century. */
        date_tm->tm_year += tmp_tm->tm_year - (tmp_tm->tm_year % 100);
    }

    return TRUE;
}


static gboolean
e_date_edit_parse_time  (EDateEdit  *dedit,
             gchar      *time_text,
             struct tm  *time_tm)
{
    gchar *format;

    if (field_set_to_none (time_text)) {
        time_tm->tm_hour = 0;
        time_tm->tm_min = 0;
        return TRUE;
    }

    if (dedit->priv->use_24_hour_format)
        /* This is a strptime() format. %H = hour (0-23), %M = minute. */
        format = _("%H:%M");
    else
        /* This is a strptime() format. %I = hour (1-12), %M = minute, %p = am/pm string. */
        format = _("%I:%M %p");

    if (!strptime (time_text, format, time_tm))
        return FALSE;

    return TRUE;
}


/* Returns TRUE if the string is empty or is "None" in the current locale.
   It ignores whitespace. */
static gboolean
field_set_to_none       (char       *text)
{
    char *pos, *none_string;

    pos = text;
    while (isspace (*pos))
        pos++;

    none_string = _("None");

    if (*pos == '\0' || !strncmp (pos, none_string, strlen (none_string)))
        return TRUE;
    return FALSE;
}


static void
on_date_edit_time_selected  (GtkList    *list,
                 EDateEdit  *dedit)
{
    GtkWidget *toplevel;

    /* We only want to emit signals when an item is selected explicitly,
       not when it is selected by the silly combo update thing. */
    if (!list->selection)
        return;