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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* 
 * e-minicard-view.c
 * Copyright (C) 2000  Ximian, Inc.
 * Author: Chris Lahey <clahey@ximian.com>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 *
 * 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 library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

#include <config.h>

#include "e-minicard-view.h"

#include "eab-gui-util.h"
#include "eab-marshal.h"
#include "util/eab-book-util.h"

#include <gtk/gtkselection.h>
#include <gtk/gtkdnd.h>
#include <gdk/gdkkeysyms.h>
#include <misc/e-canvas.h>
#include <libgnome/gnome-i18n.h>
#include <string.h>
#include "a11y/addressbook/ea-addressbook.h"

static void e_minicard_view_drag_data_get(GtkWidget *widget,
                      GdkDragContext *context,
                      GtkSelectionData *selection_data,
                      guint info,
                      guint time,
                      EMinicardView *view);

static EReflowClass *parent_class = NULL;
#define PARENT_TYPE (E_REFLOW_TYPE)

/* The arguments we take */
enum {
    PROP_0,
    PROP_ADAPTER,
    PROP_BOOK,
    PROP_QUERY,
    PROP_EDITABLE
};


enum {
    RIGHT_CLICK,
    LAST_SIGNAL
};

static guint signals [LAST_SIGNAL] = {0, };

enum DndTargetType {
    DND_TARGET_TYPE_VCARD_LIST,
    DND_TARGET_TYPE_SOURCE_VCARD_LIST
};
#define VCARD_LIST_TYPE "text/x-vcard"
#define SOURCE_VCARD_LIST_TYPE "text/x-source-vcard"
static GtkTargetEntry drag_types[] = {
    { SOURCE_VCARD_LIST_TYPE, 0, DND_TARGET_TYPE_SOURCE_VCARD_LIST },
    { VCARD_LIST_TYPE, 0, DND_TARGET_TYPE_VCARD_LIST }
};
static gint num_drag_types = sizeof(drag_types) / sizeof(drag_types[0]);

static void
e_minicard_view_drag_data_get(GtkWidget *widget,
                  GdkDragContext *context,
                  GtkSelectionData *selection_data,
                  guint info,
                  guint time,
                  EMinicardView *view)
{
    if (!E_IS_MINICARD_VIEW(view))
        return;

    switch (info) {
    case DND_TARGET_TYPE_VCARD_LIST: {
        char *value;
        
        value = eab_contact_list_to_string (view->drag_list);

        gtk_selection_data_set (selection_data,
                    selection_data->target,
                    8,
                    value, strlen (value));
        break;
    }
    case DND_TARGET_TYPE_SOURCE_VCARD_LIST: {
        EBook *book;
        char *value;
        
        g_object_get (view->adapter, "book", &book, NULL);
        value = eab_book_and_contact_list_to_string (book, view->drag_list);

        gtk_selection_data_set (selection_data,
                    selection_data->target,
                    8,
                    value, strlen (value));
        break;
    }
    }
}

static void
clear_drag_data (EMinicardView *view)
{
    g_list_foreach (view->drag_list, (GFunc)g_object_unref, NULL);
    g_list_free (view->drag_list);
    view->drag_list = NULL;
}

static int
e_minicard_view_drag_begin (EAddressbookReflowAdapter *adapter, GdkEvent *event, EMinicardView *view)
{
    GdkDragContext *context;
    GtkTargetList *target_list;
    GdkDragAction actions = GDK_ACTION_MOVE | GDK_ACTION_COPY;

    clear_drag_data (view);
    
    view->drag_list = e_minicard_view_get_card_list (view);

    g_print ("dragging %d card(s)\n", g_list_length (view->drag_list));

    target_list = gtk_target_list_new (drag_types, num_drag_types);

    context = gtk_drag_begin (GTK_WIDGET (GNOME_CANVAS_ITEM (view)->canvas),
                  target_list, actions, 1/*XXX*/, event);

    if (!view->canvas_drag_data_get_id)
        view->canvas_drag_data_get_id = g_signal_connect (GNOME_CANVAS_ITEM (view)->canvas,
                                  "drag_data_get",
                                  G_CALLBACK (e_minicard_view_drag_data_get),
                                  view);

    gtk_drag_set_icon_default (context);

    return TRUE;
}

static void
set_empty_message (EMinicardView *view)
{
    char *empty_message;
    gboolean editable = FALSE, perform_initial_query = FALSE;
    EBook *book;

    if (view->adapter) {
        g_object_get (view->adapter,
                  "editable", &editable,
                  NULL);

        g_object_get (view->adapter, "book", &book, NULL);
        if (!e_book_check_static_capability (book, "do-initial-query"))
            perform_initial_query = TRUE;
    }

    if (editable) {
        if (perform_initial_query)
            empty_message = _("\n\nSearch for the Contact\n\n"
                      "or double-click here to create a new Contact.");
        else
            empty_message = _("\n\nThere are no items to show in this view.\n\n"
                      "Double-click here to create a new Contact.");
    }
    else {
        if (perform_initial_query)
            empty_message = _("\n\nSearch for the Contact.");
        else
            empty_message = _("\n\nThere are no items to show in this view.");
    }

    g_object_set (view,
              "empty_message", empty_message,
              NULL);
}

static void
writable_status_change (EABModel *model, gboolean writable, EMinicardView *view)
{
    set_empty_message (view);
}

static void
adapter_changed (EMinicardView *view)
{
    set_empty_message (view);

    g_signal_connect (view->adapter, "drag_begin",
              G_CALLBACK (e_minicard_view_drag_begin), view);
}

static void
e_minicard_view_set_property (GObject *object,
                  guint prop_id,
                  const GValue *value,
                  GParamSpec *pspec)
{
    EMinicardView *view;

    view = E_MINICARD_VIEW (object);
    
    switch (prop_id){
    case PROP_ADAPTER:
        if (view->adapter) {
            if (view->writable_status_id) {
                EABModel *model;
                g_object_get (view->adapter,
                          "model", &model,
                          NULL);
                if (model) {
                    g_signal_handler_disconnect (model, view->writable_status_id);
                }
            }

            g_object_unref (view->adapter);
        }
        view->writable_status_id = 0;
        view->adapter = g_value_get_object (value);
        g_object_ref (view->adapter);
        adapter_changed (view);
        g_object_set (view,
                  "model", view->adapter,
                  NULL);
        if (view->adapter) {
            EABModel *model;
            g_object_get (view->adapter,
                      "model", &model,
                      NULL);
            if (model) {
                view->writable_status_id =
                    g_signal_connect (model, "writable_status",
                              G_CALLBACK (writable_status_change), view);
            }
                                
        }
        break;
    case PROP_BOOK:
        g_object_set (view->adapter,
                  "book", g_value_get_object (value),
                  NULL);
        set_empty_message (view);
        break;
    case PROP_QUERY:
        g_object_set (view->adapter,
                  "query", g_value_get_string (value),
                  NULL);
        break;
    case PROP_EDITABLE:
        g_object_set (view->adapter,
                  "editable", g_value_get_boolean (value),
                  NULL);
        set_empty_message (view);
        break;
    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
        break;
    }
}

static void
e_minicard_view_get_property (GObject *object,
                  guint prop_id,
                  GValue *value,
                  GParamSpec *pspec)
{
    EMinicardView *view;

    view = E_MINICARD_VIEW (object);

    switch (prop_id) {
    case PROP_ADAPTER:
        g_value_set_object (value, view->adapter);
        break;
    case PROP_BOOK:
        g_object_get_property (G_OBJECT (view->adapter),
                       "book", value);
        break;
    case PROP_QUERY:
        g_object_get_property (G_OBJECT (view->adapter),
                       "query", value);
        break;
    case PROP_EDITABLE:
        g_object_get_property (G_OBJECT (view->adapter),
                       "editable", value);
        break;
    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
        break;
    }
}

static void
e_minicard_view_dispose (GObject *object)
{
    EMinicardView *view = E_MINICARD_VIEW(object);

    clear_drag_data (view);

    if (view->canvas_drag_data_get_id) {
        g_signal_handler_disconnect (GNOME_CANVAS_ITEM (view)->canvas,
                         view->canvas_drag_data_get_id);
        view->canvas_drag_data_get_id = 0;
    }

    if (view->adapter) {
        if (view->writable_status_id) {
            EABModel *model;
            g_object_get (view->adapter,
                      "model", &model,
                      NULL);
            if (model) {
                g_signal_handler_disconnect (model, view->writable_status_id);
            }
        }

        g_object_unref (view->adapter);
    }
    view->writable_status_id = 0;
    view->adapter = NULL;

    if (G_OBJECT_CLASS(parent_class)->dispose)
        G_OBJECT_CLASS(parent_class)->dispose (object);
}

static guint
e_minicard_view_right_click (EMinicardView *view, GdkEvent *event)
{
    guint ret_val = 0;
    g_signal_emit (view, signals[RIGHT_CLICK], 0,
               event, &ret_val);
    return ret_val;
}

static gboolean
e_minicard_view_event (GnomeCanvasItem *item, GdkEvent *event)
{
    EMinicardView *view;
 
    view = E_MINICARD_VIEW (item);

    switch( event->type ) {
    case GDK_2BUTTON_PRESS:
        if (((GdkEventButton *)event)->button == 1) {
            gboolean editable;

            g_object_get(view->adapter, "editable", &editable, NULL);
  
            if (editable) {
                EBook *book;
                g_object_get(view, "book", &book, NULL);
 
                if (book && E_IS_BOOK (book))
                    eab_show_contact_editor (book, e_contact_new(), TRUE, editable);
            }
            return TRUE;
        }
    case GDK_BUTTON_PRESS:
        if (event->button.button == 3) {
            e_minicard_view_right_click (view, event);
        }
        break;
    case GDK_KEY_PRESS:
        if (event->key.keyval & GDK_SHIFT_MASK &&
            event->key.keyval == GDK_F10) {
            e_minicard_view_right_click (view, event);
        }
        break;
    default:
        break;
    }

    if (GNOME_CANVAS_ITEM_CLASS(parent_class)->event)
        return GNOME_CANVAS_ITEM_CLASS(parent_class)->event(item, event);
    else
        return FALSE;
}

static gint
e_minicard_view_selection_event (EReflow *reflow, GnomeCanvasItem *item, GdkEvent *event)
{
    EMinicardView *view;
    int return_val = FALSE;

    view = E_MINICARD_VIEW (reflow);
    if (parent_class->selection_event) {
        return_val = parent_class->selection_event (reflow, item, event);
    }

    switch (event->type) {
    case GDK_FOCUS_CHANGE:
        if (event->focus_change.in) {
            int i;
            for (i = 0; i < reflow->count; i++) {
                if (reflow->items[i] == item) {
                    e_selection_model_maybe_do_something(reflow->selection, i, 0, 0);
                    break;
                }
            }
        }
        break;
    case GDK_BUTTON_PRESS:
        if (event->button.button == 3) {
            return_val = e_minicard_view_right_click (view, event);
            if (!return_val)
                e_selection_model_right_click_up(reflow->selection);
        }
        break;
    default:
        break;
    }
    return return_val;
}

typedef struct {
    EMinicardView *view;
    EBookCallback cb;
    gpointer closure;
} ViewCbClosure;

static void
do_remove (int i, gpointer user_data)
{
    EBook *book;
    EContact *contact;
    ViewCbClosure *viewcbclosure = user_data;
    EMinicardView *view = viewcbclosure->view;
    EBookCallback cb = viewcbclosure->cb;
    gpointer closure = viewcbclosure->closure;

    g_object_get (view->adapter,
              "book", &book,
              NULL);

    contact = e_addressbook_reflow_adapter_get_contact (view->adapter, i);

    e_book_async_remove_contact(book, contact, cb, closure);

    g_object_unref (contact);
}

#if 0
static int
compare_to_utf_str (EMinicard *card, const char *utf_str)
{
    g_return_val_if_fail(card != NULL, 0);
    g_return_val_if_fail(E_IS_MINICARD(card), 0);

    if (g_unichar_isdigit (g_utf8_get_char (utf_str))) {
        return 1;
    }

    if (card->card) {
        char *file_as;
        g_object_get(card->card,
                 "file_as", &file_as,
                 NULL);
        if (file_as)
            return g_utf8_strcasecmp (file_as, utf_str);
        else
            return 0;
    } else {
        return 0;
    }
}
#endif

static void
e_minicard_view_class_init (EMinicardViewClass *klass)
{
    GObjectClass *object_class;
    GnomeCanvasItemClass *item_class;
    EReflowClass *reflow_class;
    
    object_class = G_OBJECT_CLASS (klass);
    item_class = (GnomeCanvasItemClass *) klass;
    reflow_class = (EReflowClass *) klass;
    
    parent_class = g_type_class_peek_parent (klass);
    
    object_class->set_property    = e_minicard_view_set_property;
    object_class->get_property    = e_minicard_view_get_property;
    object_class->dispose         = e_minicard_view_dispose;

    g_object_class_install_property (object_class, PROP_ADAPTER, 
                     g_param_spec_object ("adapter",
                                  _("Adapter"),
                                  /*_( */"XXX blurb" /*)*/,
                                  E_TYPE_ADDRESSBOOK_REFLOW_ADAPTER,
                                  G_PARAM_READWRITE));

    g_object_class_install_property (object_class, PROP_BOOK, 
                     g_param_spec_object ("book",
                                  _("Book"),
                                  /*_( */"XXX blurb" /*)*/,
                                  E_TYPE_BOOK,
                                  G_PARAM_READWRITE));

    g_object_class_install_property (object_class, PROP_QUERY, 
                     g_param_spec_string ("query",
                                  _("Query"),
                                  /*_( */"XXX blurb" /*)*/,
                                  NULL,
                                  G_PARAM_READWRITE));

    g_object_class_install_property (object_class, PROP_EDITABLE, 
                     g_param_spec_boolean ("editable",
                                   _("Editable"),
                                   /*_( */"XXX blurb" /*)*/,
                                   FALSE,
                                   G_PARAM_READWRITE));

    signals [RIGHT_CLICK] =
        g_signal_new ("right_click",
                  G_OBJECT_CLASS_TYPE (object_class),
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET (EMinicardViewClass, right_click),
                  NULL, NULL,
                  eab_marshal_INT__POINTER,
                  G_TYPE_INT, 1, G_TYPE_POINTER);

    item_class->event             = e_minicard_view_event;

    reflow_class->selection_event = e_minicard_view_selection_event;
    /* GnomeCanvasItem method overrides */

    /* init the accessibility support for e_minicard_view */
    e_minicard_view_a11y_init();
}

static void
e_minicard_view_init (EMinicardView *view)
{
    view->drag_list = NULL;
    view->adapter = NULL;
    view->canvas_drag_data_get_id = 0;
    view->writable_status_id = 0;

    set_empty_message (view);
}

GType
e_minicard_view_get_type (void)
{
    static GType reflow_type = 0;

    if (!reflow_type) {
        static const GTypeInfo reflow_info =  {
            sizeof (EMinicardViewClass),
            NULL,           /* base_init */
            NULL,           /* base_finalize */
            (GClassInitFunc) e_minicard_view_class_init,
            NULL,           /* class_finalize */
            NULL,           /* class_data */
            sizeof (EMinicardView),
            0,             /* n_preallocs */
            (GInstanceInitFunc) e_minicard_view_init,
        };

        reflow_type = g_type_register_static (PARENT_TYPE, "EMinicardView", &reflow_info, 0);
    }

    return reflow_type;
}

void
e_minicard_view_remove_selection(EMinicardView *view,
                 EBookCallback  cb,
                 gpointer       closure)
{
    ViewCbClosure viewcbclosure;
    viewcbclosure.view = view;
    viewcbclosure.cb = cb;
    viewcbclosure.closure = closure;

    e_selection_model_foreach (E_REFLOW (view)->selection,
                   do_remove,
                   &viewcbclosure);
}

void
e_minicard_view_jump_to_letter (EMinicardView *view,
                                gunichar letter)
{
#if 0
    char uft_str[6 + 1];

    utf_str [g_unichar_to_utf8 (letter, utf_str)] = '\0';
    e_reflow_sorted_jump (E_REFLOW_SORTED (view),
                          (GCompareFunc) compare_to_utf_str,
                          utf_str);
#endif
}

typedef struct {
    GList *list;
    EAddressbookReflowAdapter *adapter;
} ModelAndList;

static void
add_to_list (int index, gpointer closure)
{
    ModelAndList *mal = closure;
    mal->list = g_list_prepend (mal->list, e_addressbook_reflow_adapter_get_contact (mal->adapter, index));
}

GList *
e_minicard_view_get_card_list (EMinicardView *view)
{
    ModelAndList mal;

    mal.adapter = view->adapter;
    mal.list = NULL;

    e_selection_model_foreach (E_REFLOW (view)->selection, add_to_list, &mal);

    mal.list = g_list_reverse (mal.list);
    return mal.list;
}