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/*
 * Evolution integration plugin for Purple
 *
 * Copyright (C) 2003 Christian Hammond.
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02111-1301, USA.
 */
#include "internal.h"
#include "gtkblist.h"
#include "pidgin.h"

#include "gtkutils.h"

#include "gevolution.h"

#include <stdlib.h>
#include <gtk/gtk.h>

enum
{
	COLUMN_NAME,
	COLUMN_DATA,
	NUM_COLUMNS
};

static gint
delete_win_cb(GtkWidget *w, GdkEvent *event, GevoAssociateBuddyDialog *dialog)
{
	gtk_widget_destroy(dialog->win);

	g_list_free_full(dialog->contacts, g_object_unref);

	g_object_unref(dialog->book);
	gevo_addrbooks_model_unref(dialog->addrbooks);

	g_free(dialog);

	return 0;
}

static void
search_changed_cb(GtkEntry *entry, GevoAssociateBuddyDialog *dialog)
{
	const char *text = gtk_entry_get_text(entry);
	GList *l;

	gtk_list_store_clear(dialog->model);

	for (l = dialog->contacts; l != NULL; l = l->next)
	{
		EContact *contact = E_CONTACT(l->data);
		const char *name;
		GtkTreeIter iter;

		name = e_contact_get_const(contact, E_CONTACT_FULL_NAME);

		if (text != NULL && *text != '\0' && name != NULL &&
			g_ascii_strncasecmp(name, text, strlen(text)))
		{
			continue;
		}

		gtk_list_store_append(dialog->model, &iter);

		gtk_list_store_set(dialog->model, &iter,
						   COLUMN_NAME, name,
						   COLUMN_DATA, contact,
						   -1);
	}
}

static void
clear_cb(GtkWidget *w, GevoAssociateBuddyDialog *dialog)
{
	static gboolean lock = FALSE;

	if (lock)
		return;

	lock = TRUE;
	gtk_entry_set_text(GTK_ENTRY(dialog->search_field), "");
	lock = FALSE;
}

static void
selected_cb(GtkTreeSelection *sel, GevoAssociateBuddyDialog *dialog)
{
	GtkTreeSelection *selection;

	selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(dialog->treeview));
	gtk_widget_set_sensitive(dialog->assoc_button,
							 gtk_tree_selection_get_selected(selection, NULL, NULL));
}

static void
add_columns(GevoAssociateBuddyDialog *dialog)
{
	GtkCellRenderer *renderer;
	GtkTreeViewColumn *column;

	/* Name column */
	column = gtk_tree_view_column_new();
	gtk_tree_view_column_set_title(column, _("Name"));
	gtk_tree_view_insert_column(GTK_TREE_VIEW(dialog->treeview), column, -1);
	gtk_tree_view_column_set_sort_column_id(column, COLUMN_NAME);

	renderer = gtk_cell_renderer_text_new();
	gtk_tree_view_column_pack_start(column, renderer, TRUE);
	gtk_tree_view_column_add_attribute(column, renderer,
									   "text", COLUMN_NAME);
}

static void
populate_treeview(GevoAssociateBuddyDialog *dialog, const gchar *uid)
{
	EBook *book;
	EBookQuery *query;
	gboolean status;
	GList *cards, *c;
	GError *err = NULL;

	if (dialog->book != NULL)
	{
		g_object_unref(dialog->book);
		dialog->book = NULL;
	}

	if (dialog->contacts != NULL)
	{
		g_list_free_full(dialog->contacts, g_object_unref);
		dialog->contacts = NULL;
	}

	gtk_list_store_clear(dialog->model);

	if (!gevo_load_addressbook(uid, &book, &err)) {
		purple_debug_error("evolution",
						 "Error retrieving addressbook: %s\n", err->message);
		g_error_free(err);

		return;
	}

	query = e_book_query_field_exists(E_CONTACT_FULL_NAME);

	if (query == NULL)
	{
		purple_debug_error("evolution", "Error in creating query\n");

		g_object_unref(book);

		return;
	}

	status = e_book_get_contacts(book, query, &cards, NULL);

	e_book_query_unref(query);

	if (!status)
	{
		purple_debug_error("evolution", "Error %d in getting card list\n",
						 status);

		g_object_unref(book);

		return;
	}

	for (c = cards; c != NULL; c = c->next)
	{
		EContact *contact = E_CONTACT(c->data);
		const char *name;
		GtkTreeIter iter;
		EContactField protocol_field = 0;

		name = e_contact_get_const(contact, E_CONTACT_FULL_NAME);

		gtk_list_store_append(dialog->model, &iter);

		gtk_list_store_set(dialog->model, &iter,
						   COLUMN_NAME, name,
						   COLUMN_DATA, contact,
						   -1);

		/* See if this user has the buddy in its list. */
		protocol_field = gevo_protocol_get_field(
			purple_buddy_get_account(dialog->buddy),
			dialog->buddy);

		if (protocol_field > 0)
		{
			GList *ims, *l;

			ims = e_contact_get(contact, protocol_field);

			for (l = ims; l != NULL; l = l->next)
			{
				if (purple_strequal(l->data,
					purple_buddy_get_name(dialog->buddy)))
				{
					GtkTreeSelection *selection;

					/* This is it. Select it. */
					selection = gtk_tree_view_get_selection(
						GTK_TREE_VIEW(dialog->treeview));

					gtk_tree_selection_select_iter(selection, &iter);
					break;
				}
			}
		}
	}

	dialog->contacts = cards;
	dialog->book = book;
}

static void
addrbook_change_cb(GtkComboBox *combo, GevoAssociateBuddyDialog *dialog)
{
	GtkTreeIter iter;
	const char *esource_uid;

	if (!gtk_combo_box_get_active_iter(combo, &iter))
		return;

	gtk_tree_model_get(GTK_TREE_MODEL(dialog->addrbooks), &iter,
		ADDRBOOK_COLUMN_UID, &esource_uid, -1);

	populate_treeview(dialog, esource_uid);
}

static void
new_person_cb(GtkWidget *w, GevoAssociateBuddyDialog *dialog)
{
	gevo_new_person_dialog_show(dialog->book, NULL,
		purple_buddy_get_account(dialog->buddy),
		purple_buddy_get_name(dialog->buddy),
		NULL, dialog->buddy, TRUE);

	delete_win_cb(NULL, NULL, dialog);
}

static void
cancel_cb(GtkWidget *w, GevoAssociateBuddyDialog *dialog)
{
	delete_win_cb(NULL, NULL, dialog);
}

static void
assoc_buddy_cb(GtkWidget *w, GevoAssociateBuddyDialog *dialog)
{
	GtkTreeSelection *selection;
	GtkTreeIter iter;
	GList *list;
	const char *fullname;
	EContactField protocol_field;
	EContact *contact;

	selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(dialog->treeview));

	if (!gtk_tree_selection_get_selected(selection, NULL, &iter))
		return;

	gtk_tree_model_get(GTK_TREE_MODEL(dialog->model), &iter,
					   COLUMN_NAME, &fullname,
					   COLUMN_DATA, &contact,
					   -1);

	protocol_field = gevo_protocol_get_field(
		purple_buddy_get_account(dialog->buddy), dialog->buddy);

	if (protocol_field == 0)
		return; /* XXX */

	list = e_contact_get(contact, protocol_field);
	list = g_list_append(list,
		g_strdup(purple_buddy_get_name(dialog->buddy)));

	e_contact_set(contact, protocol_field, list);

	if (!e_book_commit_contact(dialog->book, contact, NULL))
		purple_debug_error("evolution", "Error adding contact to book\n");

	/* Free the list. */
	g_list_free_full(list, g_free);

	delete_win_cb(NULL, NULL, dialog);
}

GevoAssociateBuddyDialog *
gevo_associate_buddy_dialog_new(PurpleBuddy *buddy)
{
	GevoAssociateBuddyDialog *dialog;
	GtkWidget *button;
	GtkWidget *label;
	GtkWidget *vbox;
	GtkWidget *hbox;
	GtkWidget *bbox;
	GtkWidget *sep;
	GtkTreeSelection *selection;
	GtkCellRenderer *cell;

	g_return_val_if_fail(buddy != NULL, NULL);

	dialog = g_new0(GevoAssociateBuddyDialog, 1);

	dialog->buddy = buddy;

	dialog->win = pidgin_create_window(NULL, 12, "assoc_buddy", TRUE);

	g_signal_connect(G_OBJECT(dialog->win), "delete_event",
					 G_CALLBACK(delete_win_cb), dialog);

	/* Setup the vbox */
	vbox = gtk_box_new(GTK_ORIENTATION_VERTICAL, 12);
	gtk_container_add(GTK_CONTAINER(dialog->win), vbox);
	gtk_widget_show(vbox);

	/* Add the label. */
	label = gtk_label_new(_("Select a person from your address book to "
							"add this buddy to, or create a new person."));
	gtk_label_set_line_wrap(GTK_LABEL(label), TRUE);
	gtk_label_set_xalign(GTK_LABEL(label), 0);
	gtk_label_set_yalign(GTK_LABEL(label), 0);
	gtk_box_pack_start(GTK_BOX(vbox), label, FALSE, TRUE, 0);
	gtk_widget_show(label);

	/* Add the search hbox */
	hbox = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 6);
	gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, TRUE, 0);
	gtk_widget_show(hbox);

	/* "Search" */
	label = gtk_label_new(_("Search"));
	gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, FALSE, 0);
	gtk_widget_show(label);

	/* Addressbooks */
	dialog->addrbooks = gevo_addrbooks_model_new();

	dialog->addrbooks_combo = gtk_combo_box_new_with_model(dialog->addrbooks);
	cell = gtk_cell_renderer_text_new();
	gtk_cell_layout_pack_start(GTK_CELL_LAYOUT(dialog->addrbooks_combo),
							   cell, TRUE);
	gtk_cell_layout_set_attributes(GTK_CELL_LAYOUT(dialog->addrbooks_combo),
								   cell,
								   "text", ADDRBOOK_COLUMN_NAME,
								   NULL);
	gtk_box_pack_start(GTK_BOX(hbox), dialog->addrbooks_combo, FALSE, FALSE, 0);
	gtk_widget_show(dialog->addrbooks_combo);


	/* Search field */
	dialog->search_field = gtk_entry_new();
	gtk_box_pack_start(GTK_BOX(hbox), dialog->search_field, TRUE, TRUE, 0);
	gtk_widget_show(dialog->search_field);

	g_signal_connect(G_OBJECT(dialog->search_field), "changed",
					 G_CALLBACK(search_changed_cb), dialog);

	/* Clear button */
	button = gtk_button_new_with_mnemonic(_("C_lear"));
	gtk_box_pack_start(GTK_BOX(hbox), button, FALSE, FALSE, 0);
	gtk_widget_show(button);

	g_signal_connect(G_OBJECT(button), "clicked",
					 G_CALLBACK(clear_cb), dialog);

	/* Create the list model for the treeview. */
	dialog->model = gtk_list_store_new(NUM_COLUMNS,
									   G_TYPE_STRING, G_TYPE_POINTER);

	/* Now for the treeview */
	dialog->treeview = gtk_tree_view_new_with_model(
			GTK_TREE_MODEL(dialog->model));
	gtk_box_pack_start(GTK_BOX(vbox),
		pidgin_make_scrollable(dialog->treeview, GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS, GTK_SHADOW_IN, -1, -1),
		TRUE, TRUE, 0);
	gtk_widget_show(dialog->treeview);

	selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(dialog->treeview));

	gtk_tree_selection_set_mode(selection, GTK_SELECTION_SINGLE);

	g_signal_connect(G_OBJECT(selection), "changed",
					 G_CALLBACK(selected_cb), dialog);

	add_columns(dialog);

	/*
	 * Catch addressbook selection and populate treeview with the first
	 * addressbook
	 */
	gevo_addrbooks_model_populate( dialog->addrbooks );
	g_signal_connect(G_OBJECT(dialog->addrbooks_combo), "changed",
					 G_CALLBACK(addrbook_change_cb), dialog);
	gtk_combo_box_set_active(GTK_COMBO_BOX(dialog->addrbooks_combo), 0);

	/* Separator. */
	sep = gtk_separator_new(GTK_ORIENTATION_HORIZONTAL);
	gtk_box_pack_start(GTK_BOX(vbox), sep, FALSE, FALSE, 0);
	gtk_widget_show(sep);

	/* Button box */
	bbox = gtk_button_box_new(GTK_ORIENTATION_HORIZONTAL);
	gtk_box_set_spacing(GTK_BOX(bbox), 6);
	gtk_button_box_set_layout(GTK_BUTTON_BOX(bbox), GTK_BUTTONBOX_END);
	gtk_box_pack_end(GTK_BOX(vbox), bbox, FALSE, TRUE, 0);
	gtk_widget_show(bbox);

	/* "New Person" button */
	button = gtk_button_new_with_mnemonic(_("_New Person"));
	gtk_box_pack_start(GTK_BOX(bbox), button, FALSE, FALSE, 0);
	gtk_widget_show(button);

	g_signal_connect(G_OBJECT(button), "clicked",
					 G_CALLBACK(new_person_cb), dialog);

	/* "Cancel" button */
	button = gtk_button_new_with_mnemonic(_("_Cancel"));
	gtk_box_pack_start(GTK_BOX(bbox), button, FALSE, FALSE, 0);
	gtk_widget_show(button);

	g_signal_connect(G_OBJECT(button), "clicked",
					 G_CALLBACK(cancel_cb), dialog);

	/* "Associate Buddy" button */
	button = gtk_button_new_with_mnemonic(_("_Associate Buddy"));
	dialog->assoc_button = button;
	gtk_box_pack_start(GTK_BOX(bbox), button, FALSE, FALSE, 0);
	gtk_widget_set_sensitive(button, FALSE);
	gtk_widget_show(button);

	g_signal_connect(G_OBJECT(button), "clicked",
					 G_CALLBACK(assoc_buddy_cb), dialog);

	/* Show it. */
	gtk_widget_show(dialog->win);

	return dialog;
}