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/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) version 3.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the program; if not, see <http://www.gnu.org/licenses/>
 *
 *
 * Authors:
 *      Chris Lahey <clahey@ximian.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

#include <config.h>

#include <gtk/gtk.h>
#include <misc/e-canvas-background.h>
#include <misc/e-canvas.h>
#include <glib/gi18n.h>

#include "e-util/e-util.h"
#include "e-minicard-view-widget.h"

static void e_minicard_view_widget_init      (EMinicardViewWidget        *widget);
static void e_minicard_view_widget_class_init    (EMinicardViewWidgetClass   *class);
static void e_minicard_view_widget_set_property  (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
static void e_minicard_view_widget_get_property  (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
static void e_minicard_view_widget_dispose       (GObject *object);
static void e_minicard_view_widget_reflow        (ECanvas *canvas);
static void e_minicard_view_widget_size_allocate (GtkWidget *widget, GtkAllocation *allocation);
static void e_minicard_view_widget_style_set     (GtkWidget *widget, GtkStyle *previous_style);
static void e_minicard_view_widget_realize       (GtkWidget *widget);
static gboolean e_minicard_view_widget_real_focus_in_event (GtkWidget *widget, GdkEventFocus *event);

static gpointer parent_class;

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

enum {
    SELECTION_CHANGE,
    COLUMN_WIDTH_CHANGED,
    RIGHT_CLICK,
    LAST_SIGNAL
};

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

GType
e_minicard_view_widget_get_type (void)
{
    static GType type = 0;

    if (!type) {
        static const GTypeInfo info =  {
            sizeof (EMinicardViewWidgetClass),
            NULL,           /* base_init */
            NULL,           /* base_finalize */
            (GClassInitFunc) e_minicard_view_widget_class_init,
            NULL,           /* class_finalize */
            NULL,           /* class_data */
            sizeof (EMinicardViewWidget),
            0,             /* n_preallocs */
            (GInstanceInitFunc) e_minicard_view_widget_init,
        };

        type = g_type_register_static (e_canvas_get_type (), "EMinicardViewWidget", &info, 0);
    }

    return type;
}

static void
e_minicard_view_widget_class_init (EMinicardViewWidgetClass *class)
{
    GObjectClass *object_class;
    GtkWidgetClass *widget_class;
    ECanvasClass *canvas_class;

    parent_class = g_type_class_peek_parent (class);

    object_class = G_OBJECT_CLASS (class);
    object_class->set_property = e_minicard_view_widget_set_property;
    object_class->get_property = e_minicard_view_widget_get_property;
    object_class->dispose = e_minicard_view_widget_dispose;

    widget_class = GTK_WIDGET_CLASS (class);
    widget_class->style_set = e_minicard_view_widget_style_set;
    widget_class->realize = e_minicard_view_widget_realize;
    widget_class->size_allocate = e_minicard_view_widget_size_allocate;
    widget_class->focus_in_event = e_minicard_view_widget_real_focus_in_event;

    canvas_class = E_CANVAS_CLASS (class);
    canvas_class->reflow = e_minicard_view_widget_reflow;

    class->selection_change = NULL;
    class->column_width_changed = NULL;
    class->right_click = NULL;

    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));

    g_object_class_install_property (object_class, PROP_COLUMN_WIDTH,
                     g_param_spec_double ("column_width",
                                  _("Column Width"),
                                  /*_( */"XXX blurb" /*)*/,
                                  0.0, G_MAXDOUBLE, 150.0,
                                  G_PARAM_READWRITE));

    signals [SELECTION_CHANGE] =
        g_signal_new ("selection_change",
                  G_OBJECT_CLASS_TYPE (object_class),
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET (EMinicardViewWidgetClass, selection_change),
                  NULL, NULL,
                  g_cclosure_marshal_VOID__VOID,
                  G_TYPE_NONE, 0);

    signals [COLUMN_WIDTH_CHANGED] =
        g_signal_new ("column_width_changed",
                  G_OBJECT_CLASS_TYPE (object_class),
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET (EMinicardViewWidgetClass, column_width_changed),
                  NULL, NULL,
                  g_cclosure_marshal_VOID__DOUBLE,
                  G_TYPE_NONE, 1, G_TYPE_DOUBLE);

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

static void
e_minicard_view_widget_init (EMinicardViewWidget *view)
{
    view->emv = NULL;

    view->book = NULL;
    view->query = NULL;
    view->editable = FALSE;
    view->column_width = 150;
}

GtkWidget *
e_minicard_view_widget_new (EAddressbookReflowAdapter *adapter)
{
    EMinicardViewWidget *widget = E_MINICARD_VIEW_WIDGET (g_object_new (e_minicard_view_widget_get_type (), NULL));

    widget->adapter = adapter;
    g_object_ref (widget->adapter);

    return GTK_WIDGET (widget);
}

static void
e_minicard_view_widget_set_property (GObject *object,
                     guint prop_id,
                     const GValue *value,
                     GParamSpec *pspec)
{
    EMinicardViewWidget *emvw;

    emvw = E_MINICARD_VIEW_WIDGET (object);

    switch (prop_id){
    case PROP_BOOK:
        if (emvw->book)
            g_object_unref (emvw->book);
        if (g_value_get_object (value)) {
            emvw->book = E_BOOK(g_value_get_object (value));
            if (emvw->book)
                g_object_ref(emvw->book);
        } else
            emvw->book = NULL;
        if (emvw->emv)
            g_object_set(emvw->emv,
                     "book", emvw->book,
                       NULL);
        break;
    case PROP_QUERY:
        emvw->query = g_strdup(g_value_get_string (value));
        if (emvw->emv)
            g_object_set(emvw->emv,
                     "query", emvw->query,
                     NULL);
        break;
    case PROP_EDITABLE:
        emvw->editable = g_value_get_boolean (value);
        if (emvw->emv)
            g_object_set (emvw->emv,
                      "editable", emvw->editable,
                      NULL);
        break;
    case PROP_COLUMN_WIDTH:
        emvw->column_width = g_value_get_double (value);
        if (emvw->emv) {
            g_object_set (emvw->emv,
                      "column_width", emvw->column_width,
                      NULL);
        }
        break;
    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
        break;
    }
}

static void
e_minicard_view_widget_get_property (GObject *object,
                     guint prop_id,
                     GValue *value,
                     GParamSpec *pspec)
{
    EMinicardViewWidget *emvw;

    emvw = E_MINICARD_VIEW_WIDGET (object);

    switch (prop_id) {
    case PROP_BOOK:
        g_value_set_object (value, emvw->book);
        break;
    case PROP_QUERY:
        g_value_set_string (value, emvw->query);
        break;
    case PROP_EDITABLE:
        g_value_set_boolean (value, emvw->editable);
        break;
    case PROP_COLUMN_WIDTH:
        g_value_set_double (value, emvw->column_width);
        break;
    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
        break;
    }
}

static void
e_minicard_view_widget_dispose (GObject *object)
{
    EMinicardViewWidget *view = E_MINICARD_VIEW_WIDGET(object);

    if (view->book) {
        g_object_unref (view->book);
        view->book = NULL;
    }
    if (view->query) {
        g_free(view->query);
        view->query = NULL;
    }

    if (view->adapter) {
        g_object_unref (view->adapter);
        view->adapter = NULL;
    }

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

static void
selection_change (ESelectionModel *esm, EMinicardViewWidget *widget)
{
    g_signal_emit (widget,
               signals [SELECTION_CHANGE], 0);
}

static void
selection_row_change (ESelectionModel *esm, gint row, EMinicardViewWidget *widget)
{
    selection_change (esm, widget);
}

static void
column_width_changed (ESelectionModel *esm, double width, EMinicardViewWidget *widget)
{
    g_signal_emit (widget,
               signals [COLUMN_WIDTH_CHANGED], 0, width);
}

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

static void
e_minicard_view_widget_style_set (GtkWidget *widget, GtkStyle *previous_style)
{
    EMinicardViewWidget *view = E_MINICARD_VIEW_WIDGET(widget);

    if (view->background)
        gnome_canvas_item_set (view->background,
                       "fill_color_gdk", &widget->style->base[GTK_STATE_NORMAL],
                       NULL );

    if (GTK_WIDGET_CLASS(parent_class)->style_set)
        GTK_WIDGET_CLASS(parent_class)->style_set (widget, previous_style);
}


static void
e_minicard_view_widget_realize (GtkWidget *widget)
{
    EMinicardViewWidget *view = E_MINICARD_VIEW_WIDGET(widget);
    GtkStyle *style = gtk_widget_get_style (widget);

    view->background = gnome_canvas_item_new(gnome_canvas_root( GNOME_CANVAS(view) ),
                         e_canvas_background_get_type(),
                         "fill_color_gdk", &style->base[GTK_STATE_NORMAL],
                         NULL );

    view->emv = gnome_canvas_item_new(
        gnome_canvas_root( GNOME_CANVAS(view) ),
        e_minicard_view_get_type(),
        "height", (double) 100,
        "minimum_width", (double) 100,
        "adapter", view->adapter,
        "column_width", view->column_width,
        NULL );

    g_signal_connect (E_REFLOW(view->emv)->selection,
              "selection_changed",
              G_CALLBACK (selection_change), view);
    g_signal_connect (E_REFLOW(view->emv)->selection,
              "selection_row_changed",
              G_CALLBACK (selection_row_change), view);
    g_signal_connect (view->emv,
              "column_width_changed",
              G_CALLBACK (column_width_changed), view);
    g_signal_connect (view->emv,
              "right_click",
              G_CALLBACK (right_click), view);

    if (GTK_WIDGET_CLASS(parent_class)->realize)
        GTK_WIDGET_CLASS(parent_class)->realize (widget);
}

static void
e_minicard_view_widget_size_allocate(GtkWidget *widget, GtkAllocation *allocation)
{
    if (GTK_WIDGET_CLASS(parent_class)->size_allocate)
        GTK_WIDGET_CLASS(parent_class)->size_allocate (widget, allocation);

    if (GTK_WIDGET_REALIZED(widget)) {
        double width;
        EMinicardViewWidget *view = E_MINICARD_VIEW_WIDGET(widget);

        gnome_canvas_item_set( view->emv,
                       "height", (double) allocation->height,
                       NULL );
        gnome_canvas_item_set( view->emv,
                       "minimum_width", (double) allocation->width,
                       NULL );
        g_object_get(view->emv,
                 "width", &width,
                 NULL);
        width = MAX(width, allocation->width);
        gnome_canvas_set_scroll_region (GNOME_CANVAS (view), 0, 0, width - 1, allocation->height - 1);
    }
}

static void
e_minicard_view_widget_reflow(ECanvas *canvas)
{
    double width;
    EMinicardViewWidget *view = E_MINICARD_VIEW_WIDGET(canvas);

    if (E_CANVAS_CLASS(parent_class)->reflow)
        E_CANVAS_CLASS(parent_class)->reflow (canvas);

    g_object_get(view->emv,
             "width", &width,
             NULL);
    width = MAX(width, GTK_WIDGET(canvas)->allocation.width);
    gnome_canvas_set_scroll_region(GNOME_CANVAS(canvas), 0, 0, width - 1, GTK_WIDGET(canvas)->allocation.height - 1);
}

ESelectionModel *
e_minicard_view_widget_get_selection_model (EMinicardViewWidget *view)
{
    if (view->emv)
        return E_SELECTION_MODEL (E_REFLOW (view->emv)->selection);
    else
        return NULL;
}

EMinicardView *
e_minicard_view_widget_get_view             (EMinicardViewWidget       *view)
{
    if (view->emv)
        return E_MINICARD_VIEW (view->emv);
    else
        return NULL;
}

static gboolean
e_minicard_view_widget_real_focus_in_event(GtkWidget *widget, GdkEventFocus *event)
{
    GnomeCanvas *canvas;
    EMinicardViewWidget *view;

    canvas = GNOME_CANVAS (widget);
    view = E_MINICARD_VIEW_WIDGET(widget);

    if (!canvas->focused_item) {
        EReflow *reflow = E_REFLOW (view->emv);
        if (reflow->count) {
            gint unsorted = e_sorter_sorted_to_model (E_SORTER (reflow->sorter), 0);

            if (unsorted != -1)
                canvas->focused_item = reflow->items [unsorted];
        }
    }

    if (GTK_WIDGET_CLASS(parent_class)->focus_in_event)
        return GTK_WIDGET_CLASS(parent_class)->focus_in_event (widget, event);

    return FALSE;

}