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/*
 *  Copyright (C) 2002 Jorn Baayen
 *
 *  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, 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 "ephy-node-view.h"
#include "history-dialog.h"
#include "ephy-shell.h"
#include "ephy-embed-shell.h"
#include "ephy-file-helpers.h"
#include "ephy-string.h"
#include "ephy-gui.h"
#include "ephy-dnd.h"
#include "ephy-node-filter.h"
#include "ephy-history-model.h"
#include "eggtreemodelfilter.h"
#include "eggtreemultidnd.h"
#include "ephy-tree-model-sort.h"
#include "toolbar.h"

#include <gtk/gtktreeview.h>
#include <gtk/gtktreestore.h>
#include <gtk/gtkcellrenderertext.h>
#include <bonobo/bonobo-i18n.h>

static GtkTargetEntry url_drag_types [] =
{
        { EPHY_DND_URI_LIST_TYPE,   0, 0 },
        { EPHY_DND_TEXT_TYPE,       0, 1 },
        { EPHY_DND_URL_TYPE,        0, 2 }
};
static int n_url_drag_types = G_N_ELEMENTS (url_drag_types);

#define CONF_HISTORY_SEARCH_TEXT "/apps/epiphany/history/search_text"
#define CONF_HISTORY_SEARCH_TIME "/apps/epiphany/history/search_time"

static void history_dialog_class_init (HistoryDialogClass *klass);
static void history_dialog_init (HistoryDialog *dialog);
static void history_dialog_finalize (GObject *object);
static void history_dialog_set_embedded (HistoryDialog *d,
                         gboolean embedded);


/* Glade callbacks */
void
history_host_checkbutton_toggled_cb (GtkWidget *widget,
                     HistoryDialog *dialog);
void
history_time_optionmenu_changed_cb (GtkWidget *widget,
                        HistoryDialog *dialog);
void
history_entry_changed_cb (GtkWidget *widget,
              HistoryDialog *dialog);
void
history_go_button_clicked_cb (GtkWidget *button,
                  HistoryDialog *dialog);
void
history_ok_button_clicked_cb (GtkWidget *button,
                  HistoryDialog *dialog);
void
history_clear_button_clicked_cb (GtkWidget *button,
                     HistoryDialog *dialog);


static GObjectClass *parent_class = NULL;

struct HistoryDialogPrivate
{
    GtkWidget *window;
    EphyHistory *gh;
    EphyNode *root;
    EphyNode *pages;
    EphyNodeFilter *filter;
    GtkTreeView *treeview;
    GtkTreeModel *model;
    EphyHistoryModel *nodemodel;
    GtkTreeModel *filtermodel;
    EphyTreeModelSort *sortmodel;
    GtkWidget *go_button;
    gboolean group;
    gboolean embedded;
};

enum
{
    PROP_0,
    PROP_EMBEDDED
};

enum
{
    PROP_WINDOW,
    PROP_TREEVIEW,
    PROP_WORD,
    PROP_TIME,
    PROP_GO_BUTTON  
};

static const
EphyDialogProperty properties [] =
{
    { PROP_WINDOW, "history_dialog", NULL, PT_NORMAL, NULL },
    { PROP_TREEVIEW, "history_treeview", NULL, PT_NORMAL, NULL },
    { PROP_WORD, "history_entry", CONF_HISTORY_SEARCH_TEXT, PT_NORMAL, NULL },
    { PROP_TIME, "history_time_optionmenu", CONF_HISTORY_SEARCH_TIME, PT_NORMAL, NULL },
    { PROP_GO_BUTTON, "history_go_button", NULL, PT_NORMAL, NULL },
    { -1, NULL, NULL }
};

GType
history_dialog_get_type (void)
{
        static GType history_dialog_type = 0;

        if (history_dialog_type == 0)
        {
                static const GTypeInfo our_info =
                {
                        sizeof (HistoryDialogClass),
                        NULL, /* base_init */
                        NULL, /* base_finalize */
                        (GClassInitFunc) history_dialog_class_init,
                        NULL,
                        NULL, /* class_data */
                        sizeof (HistoryDialog),
                        0, /* n_preallocs */
                        (GInstanceInitFunc) history_dialog_init
                };

                history_dialog_type = g_type_register_static (EPHY_EMBED_DIALOG_TYPE,
                                      "HistoryDialog",
                                      &our_info, 0);
        }

        return history_dialog_type;

}

static void
history_dialog_set_property (GObject *object,
                             guint prop_id,
                             const GValue *value,
                             GParamSpec *pspec)
{
        HistoryDialog *d = HISTORY_DIALOG (object);

        switch (prop_id)
        {
                case PROP_EMBEDDED:
                        history_dialog_set_embedded
                (d, g_value_get_boolean (value));
                        break;
        }
}

static void
history_dialog_get_property (GObject *object,
                             guint prop_id,
                             GValue *value,
                             GParamSpec *pspec)
{
        HistoryDialog *d = HISTORY_DIALOG (object);

        switch (prop_id)
        {
                case PROP_EMBEDDED:
                        g_value_set_boolean (value, d->priv->embedded);
                        break;
        }
}


static void
history_dialog_class_init (HistoryDialogClass *klass)
{
        GObjectClass *object_class = G_OBJECT_CLASS (klass);

        parent_class = g_type_class_peek_parent (klass);

        object_class->finalize = history_dialog_finalize;
    object_class->set_property = history_dialog_set_property;
    object_class->get_property = history_dialog_get_property;

    g_object_class_install_property (object_class,
                                         PROP_EMBEDDED,
                                         g_param_spec_boolean ("embedded",
                                                               "Show embedded in another widget",
                                                               "Show embedded in another widget",
                                                               TRUE,
                                                               G_PARAM_READWRITE));
}

static void
add_column (HistoryDialog *dialog,
        const char  *title,
            EphyHistoryModelColumn column)
{
    GtkTreeViewColumn *gcolumn;
    GtkCellRenderer *renderer;

    ephy_node_view_get_type ();

    gcolumn = (GtkTreeViewColumn *) gtk_tree_view_column_new ();
    renderer = gtk_cell_renderer_text_new ();
    gtk_tree_view_column_pack_start (gcolumn, renderer, TRUE);
    gtk_tree_view_column_set_attributes (gcolumn, renderer,
                         "text", column,
                         NULL);
    gtk_tree_view_column_set_sizing (gcolumn,
                     GTK_TREE_VIEW_COLUMN_AUTOSIZE);
    gtk_tree_view_column_set_sort_column_id (gcolumn, column);
    gtk_tree_view_column_set_title (gcolumn, title);
    gtk_tree_view_append_column (GTK_TREE_VIEW (dialog->priv->treeview),
                     gcolumn);
}

static void
history_view_selection_changed_cb (GtkTreeSelection *selection,
        HistoryDialog *dialog)
{
    if (gtk_tree_selection_count_selected_rows (selection))
        gtk_widget_set_sensitive (GTK_WIDGET (dialog->priv->go_button), TRUE);
    else
        gtk_widget_set_sensitive (GTK_WIDGET (dialog->priv->go_button), FALSE);
}

static void
history_view_row_activated_cb (GtkTreeView *treeview,
                   GtkTreePath *path,
                   GtkTreeViewColumn *column,
                   HistoryDialog *dialog)
{
    GtkTreeIter iter, iter2;
    EphyNode *node;
    EphyEmbed *embed;
    const char *location;

    gtk_tree_model_get_iter (GTK_TREE_MODEL (dialog->priv->sortmodel), &iter, path);
    gtk_tree_model_sort_convert_iter_to_child_iter
        (GTK_TREE_MODEL_SORT (dialog->priv->sortmodel), &iter2, &iter);
    egg_tree_model_filter_convert_iter_to_child_iter
        (EGG_TREE_MODEL_FILTER (dialog->priv->filtermodel), &iter, &iter2);

    node = ephy_history_model_node_from_iter (dialog->priv->nodemodel, &iter);
    location = ephy_node_get_property_string (node, EPHY_NODE_PAGE_PROP_LOCATION);
    g_return_if_fail (location != NULL);
    embed = ephy_embed_dialog_get_embed (EPHY_EMBED_DIALOG (dialog));
    ephy_embed_load_url (embed, location);
}

static void
node_from_sort_iter_cb (EphyTreeModelSort *model,
                GtkTreeIter *iter,
                void **node,
                HistoryDialog *dialog)
{
    GtkTreeIter filter_iter, node_iter;

    gtk_tree_model_sort_convert_iter_to_child_iter (GTK_TREE_MODEL_SORT (model),
                            &filter_iter, iter);
    egg_tree_model_filter_convert_iter_to_child_iter (EGG_TREE_MODEL_FILTER (dialog->priv->filtermodel),
                              &node_iter, &filter_iter);
    *node = ephy_history_model_node_from_iter (EPHY_HISTORY_MODEL (dialog->priv->nodemodel), &node_iter);
    g_return_if_fail (*node != NULL);
}

static void
history_dialog_setup_view (HistoryDialog *dialog)
{
    dialog->priv->nodemodel = ephy_history_model_new (dialog->priv->root,
                              dialog->priv->pages,
                                              dialog->priv->filter);
    dialog->priv->filtermodel = egg_tree_model_filter_new (GTK_TREE_MODEL (dialog->priv->nodemodel),
                                                   NULL);
    egg_tree_model_filter_set_visible_column (EGG_TREE_MODEL_FILTER (dialog->priv->filtermodel),
                                  EPHY_HISTORY_MODEL_COL_VISIBLE);
    dialog->priv->sortmodel = EPHY_TREE_MODEL_SORT (
            ephy_tree_model_sort_new (GTK_TREE_MODEL (dialog->priv->filtermodel)));
    ephy_tree_model_sort_set_drag_property
        (dialog->priv->sortmodel, EPHY_NODE_PAGE_PROP_LOCATION);

    g_signal_connect_object (G_OBJECT (dialog->priv->sortmodel),
                 "node_from_iter",
                 G_CALLBACK (node_from_sort_iter_cb),
                 dialog,
                 0);
    gtk_tree_view_set_model (dialog->priv->treeview,
                 GTK_TREE_MODEL (dialog->priv->sortmodel));

    egg_tree_multi_drag_add_drag_support (GTK_TREE_VIEW (dialog->priv->treeview));
    gtk_tree_view_enable_model_drag_source (GTK_TREE_VIEW (dialog->priv->treeview),
                        GDK_BUTTON1_MASK,
                        url_drag_types, n_url_drag_types,
                        GDK_ACTION_COPY);

    add_column (dialog, _("Title"), EPHY_HISTORY_MODEL_COL_TITLE);
    add_column (dialog, _("Location"), EPHY_HISTORY_MODEL_COL_LOCATION);
    add_column (dialog, _("Last Visit"), EPHY_HISTORY_MODEL_COL_LAST_VISIT);

    g_signal_connect (dialog->priv->treeview,
              "row_activated",
              G_CALLBACK (history_view_row_activated_cb),
              dialog);

    g_signal_connect (gtk_tree_view_get_selection (dialog->priv->treeview),
            "changed",
            G_CALLBACK (history_view_selection_changed_cb),
            dialog);
}

static GTime
get_date_filter (int filter_type,
         GTime atime)
{
        GDate date, current_date;
    struct tm tm;

        g_date_clear (&current_date, 1);
        g_date_set_time (&current_date, time (NULL));

        g_date_clear (&date, 1);
        g_date_set_time (&date, atime);

        switch (filter_type)
        {
                /* Always */
        case 0:
                return 0;
                /* Today */
        case 1:
                break;
                /* Last two days */
        case 2:
                g_date_subtract_days (&current_date, 1);
                break;
                /* Last three days */
        case 3:
                g_date_subtract_days (&current_date, 2);
                break;
                /* Week */
        case 4:
                g_date_subtract_days (&current_date, 7);
                break;
                /* Two weeks */
        case 5:
                g_date_subtract_days (&current_date, 14);
                break;
        default:
                break;
        }

    g_date_to_struct_tm (&current_date, &tm);
        return mktime (&tm);
}

static void
history_dialog_setup_filter (HistoryDialog *dialog)
{
    GValue word = {0, };
    GValue atime = {0, };
    const char *search_text;
    GTime date_filter;

    ephy_dialog_get_value (EPHY_DIALOG(dialog), PROP_WORD, &word);
    search_text = g_value_get_string (&word);
    ephy_dialog_get_value (EPHY_DIALOG(dialog), PROP_TIME, &atime);
    date_filter = get_date_filter (g_value_get_int (&atime), time (NULL));

    GDK_THREADS_ENTER ();

    ephy_node_filter_empty (dialog->priv->filter);
    ephy_node_filter_add_expression (dialog->priv->filter,
                         ephy_node_filter_expression_new (EPHY_NODE_FILTER_EXPRESSION_STRING_PROP_CONTAINS,
                                          EPHY_NODE_PAGE_PROP_TITLE,
                                          search_text),
                         0);
    ephy_node_filter_add_expression (dialog->priv->filter,
                         ephy_node_filter_expression_new (EPHY_NODE_FILTER_EXPRESSION_STRING_PROP_CONTAINS,
                                          EPHY_NODE_PAGE_PROP_LOCATION,
                                          search_text),
                         0);
    ephy_node_filter_add_expression (dialog->priv->filter,
                         ephy_node_filter_expression_new (EPHY_NODE_FILTER_EXPRESSION_INT_PROP_BIGGER_THAN,
                                          EPHY_NODE_PAGE_PROP_LAST_VISIT,
                                          date_filter),
                         1);

    ephy_node_filter_done_changing (dialog->priv->filter);

    GDK_THREADS_LEAVE ();
}

static void
history_dialog_init (HistoryDialog *dialog)
{
    EphyEmbedShell *ges;

    dialog->priv = g_new0 (HistoryDialogPrivate, 1);

    ges = EPHY_EMBED_SHELL (ephy_shell);
    dialog->priv->gh = ephy_embed_shell_get_global_history (ges);
    g_return_if_fail (dialog->priv->gh != NULL);

    dialog->priv->root = ephy_history_get_hosts (dialog->priv->gh);
    dialog->priv->pages = ephy_history_get_pages (dialog->priv->gh);
    dialog->priv->filter = ephy_node_filter_new ();
}

static void
history_dialog_set_embedded (HistoryDialog *dialog,
                 gboolean embedded)
{
    const char *icon_path;
    
    dialog->priv->embedded = embedded;

    ephy_dialog_construct (EPHY_DIALOG (dialog),
                   properties,
                   "epiphany.glade",
                   embedded ?
                   "history_dock_box" :
                   "history_dialog");
    dialog->priv->window = ephy_dialog_get_control (EPHY_DIALOG (dialog), PROP_WINDOW);
    dialog->priv->go_button = ephy_dialog_get_control (EPHY_DIALOG (dialog), PROP_GO_BUTTON);
    dialog->priv->treeview = GTK_TREE_VIEW (
                 ephy_dialog_get_control (EPHY_DIALOG(dialog),
                                PROP_TREEVIEW));
    
    icon_path =  ephy_file ("epiphany-history.png");
    gtk_window_set_icon_from_file (GTK_WINDOW(dialog->priv->window), icon_path, NULL);

    history_dialog_setup_view (dialog);
    history_dialog_setup_filter (dialog);
}

static void
history_dialog_finalize (GObject *object)
{
    HistoryDialog *dialog;

        g_return_if_fail (object != NULL);
        g_return_if_fail (IS_HISTORY_DIALOG (object));

    dialog = HISTORY_DIALOG (object);

        g_return_if_fail (dialog->priv != NULL);

    g_object_unref (G_OBJECT (dialog->priv->sortmodel));
    g_object_unref (G_OBJECT (dialog->priv->filtermodel));
    g_object_unref (G_OBJECT (dialog->priv->nodemodel));

        g_free (dialog->priv);

        G_OBJECT_CLASS (parent_class)->finalize (object);
}

EphyDialog *
history_dialog_new (EphyEmbed *embed,
            gboolean embedded)
{
    HistoryDialog *dialog;

    dialog = HISTORY_DIALOG (g_object_new (HISTORY_DIALOG_TYPE,
                           "embedded", embedded,
                           "EphyEmbed", embed,
                               NULL));

    return EPHY_DIALOG(dialog);
}

EphyDialog *
history_dialog_new_with_parent (GtkWidget *window,
                        EphyEmbed *embed,
                        gboolean embedded)
{
    HistoryDialog *dialog;

    dialog = HISTORY_DIALOG (g_object_new (HISTORY_DIALOG_TYPE,
                           "embedded", embedded,
                           "EphyEmbed", embed,
                           "ParentWindow", window,
                               NULL));

    return EPHY_DIALOG(dialog);
}

void
history_entry_changed_cb (GtkWidget *widget,
              HistoryDialog *dialog)
{
    if (dialog->priv->treeview == NULL) return;
    history_dialog_setup_filter (dialog);
}

void
history_time_optionmenu_changed_cb (GtkWidget *widget,
                        HistoryDialog *dialog)
{
    if (dialog->priv->treeview == NULL) return;
    history_dialog_setup_filter (dialog);
}

void
history_go_button_clicked_cb (GtkWidget *button,
        HistoryDialog *dialog)
{
    GtkTreeSelection *selection;
    GtkTreeIter iter, iter2;
    EphyNode *node;
    EphyEmbed *embed;
    const char *location;

    selection = gtk_tree_view_get_selection (dialog->priv->treeview);
    g_return_if_fail (selection != NULL);
    gtk_tree_selection_get_selected (selection, NULL, &iter);
    gtk_tree_model_sort_convert_iter_to_child_iter
        (GTK_TREE_MODEL_SORT (dialog->priv->sortmodel), &iter2, &iter);
    egg_tree_model_filter_convert_iter_to_child_iter
        (EGG_TREE_MODEL_FILTER (dialog->priv->filtermodel), &iter, &iter2);

    node = ephy_history_model_node_from_iter (dialog->priv->nodemodel, &iter);
    location = ephy_node_get_property_string (node, EPHY_NODE_PAGE_PROP_LOCATION);
    g_return_if_fail (location != NULL);
    embed = ephy_embed_dialog_get_embed (EPHY_EMBED_DIALOG (dialog));
    ephy_embed_load_url (embed, location);
}

void
history_ok_button_clicked_cb (GtkWidget *button,
                  HistoryDialog *dialog)
{
    g_object_unref (G_OBJECT(dialog));
}

static void
clear_history_dialog_response_cb (GtkDialog *dialog, gint response,
                      HistoryDialog *history_dialog)
{
    const GList *windows;
    Session *session;

    gtk_widget_destroy (GTK_WIDGET (dialog));
    
    if (response != GTK_RESPONSE_OK)
        return;
    
    session = ephy_shell_get_session (ephy_shell);
    windows = session_get_windows (session);

    for (; windows != NULL; windows = windows->next)
    {
        Toolbar *t;

        t = ephy_window_get_toolbar (EPHY_WINDOW (windows->data));
        toolbar_clear_location_history (t);
    }

    ephy_history_clear (history_dialog->priv->gh);
}

void
history_clear_button_clicked_cb (GtkWidget *button,
                     HistoryDialog *dialog)
{
    GtkWidget *clear;
    GtkWidget *label;
    GtkWidget *vbox;
    GtkWidget *hbox;
    GtkWidget *image;
    char *str;

    clear = gtk_dialog_new_with_buttons (_("Clear history"), 
                         GTK_WINDOW (dialog->priv->window),
                         GTK_DIALOG_DESTROY_WITH_PARENT |
                         GTK_DIALOG_NO_SEPARATOR,
                         GTK_STOCK_CANCEL,
                         GTK_RESPONSE_CANCEL,
                         GTK_STOCK_CLEAR,
                         GTK_RESPONSE_OK, 
                         NULL);
    gtk_dialog_set_default_response (GTK_DIALOG (clear), GTK_RESPONSE_OK);
    gtk_container_set_border_width (GTK_CONTAINER (clear), 6);
    gtk_box_set_spacing (GTK_BOX (GTK_DIALOG (clear)->vbox), 12);

    hbox = gtk_hbox_new (FALSE, 6);
    gtk_widget_show (hbox);
    gtk_box_pack_start (GTK_BOX (GTK_DIALOG (clear)->vbox), hbox,
                TRUE, TRUE, 0);
    
    image = gtk_image_new_from_stock (GTK_STOCK_DIALOG_WARNING,
                      GTK_ICON_SIZE_DIALOG);
    gtk_misc_set_alignment (GTK_MISC (image), 0.5, 0.0);
    gtk_widget_show (image);
    gtk_box_pack_start (GTK_BOX (hbox), image, TRUE, TRUE, 0);

    vbox = gtk_vbox_new (FALSE, 6);
    gtk_widget_show (vbox);
    gtk_box_pack_start (GTK_BOX (hbox), vbox, TRUE, TRUE, 0);

    label = gtk_label_new (NULL);
    gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
    gtk_label_set_line_wrap (GTK_LABEL (label), TRUE);
    str = g_strconcat ("<b>","<big>", _("Clear browsing history?"),"</big>", "</b>", NULL);
    gtk_label_set_markup (GTK_LABEL (label), str);
    g_free (str);
    gtk_box_pack_start (GTK_BOX (vbox), label, TRUE, TRUE, 0);
    gtk_widget_show (label);

    label = gtk_label_new (_("Clearing the browsing history will cause all history items to be permanently deleted."));
    gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
    gtk_label_set_line_wrap (GTK_LABEL (label), TRUE);
    gtk_box_pack_start (GTK_BOX (vbox), label, TRUE, TRUE, 0);
    gtk_widget_show (label);

    g_signal_connect (clear, "response", 
              G_CALLBACK (clear_history_dialog_response_cb), dialog);
        gtk_widget_show (clear);    
}