src/gtklog.c

/**
 * @file gtklog.c GTK+ Log viewer
 * @ingroup gtkui
 *
 * gaim
 *
 * Gaim is the legal property of its developers, whose names are too numerous
 * to list here.  Please refer to the COPYRIGHT file distributed with this
 * source distribution.
 *
 * 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
 */
#include "internal.h"
#include "gtkgaim.h"

#include "account.h"
#include "util.h"
#include "gtkblist.h"
#include "gtkimhtml.h"
#include "gtklog.h"
#include "gtkutils.h"
#include "log.h"
#include "util.h"

static GHashTable *log_viewers = NULL;
static void populate_log_tree(GaimGtkLogViewer *lv);
static GaimGtkLogViewer *syslog_viewer = NULL;

struct log_viewer_hash_t {
	GaimLogType type;
	char *screenname;
	GaimAccount *account;
	GaimContact *contact;
};

static guint log_viewer_hash(gconstpointer data)
{
	const struct log_viewer_hash_t *viewer = data;

	if (viewer->contact != NULL)
		return g_direct_hash(viewer->contact);

	return g_str_hash(viewer->screenname) +
		g_str_hash(gaim_account_get_username(viewer->account));
}

static gboolean log_viewer_equal(gconstpointer y, gconstpointer z)
{
	const struct log_viewer_hash_t *a, *b;
	int ret;
	char *normal;

	a = y;
	b = z;

	if (a->contact != NULL) {
		if (b->contact != NULL)
			return (a->contact == b->contact);
		else
			return FALSE;
	} else {
		if (b->contact != NULL)
			return FALSE;
	}

	normal = g_strdup(gaim_normalize(a->account, a->screenname));
	ret = (a->account == b->account) &&
		!strcmp(normal, gaim_normalize(b->account, b->screenname));
	g_free(normal);

	return ret;
}

static void search_cb(GtkWidget *button, GaimGtkLogViewer *lv)
{
	const char *search_term = gtk_entry_get_text(GTK_ENTRY(lv->entry));
	GList *logs;
	GdkCursor *cursor = gdk_cursor_new(GDK_WATCH);

	if (lv->search != NULL)
		g_free(lv->search);

       	gtk_tree_store_clear(lv->treestore);
	if (strlen(search_term) == 0) {/* reset the tree */
		populate_log_tree(lv);
		lv->search = NULL;
		gtk_imhtml_search_clear(GTK_IMHTML(lv->imhtml));
		return;
	}

	lv->search = g_strdup(search_term);

	gdk_window_set_cursor(lv->window->window, cursor);
	while (gtk_events_pending())
		gtk_main_iteration();
	gdk_cursor_unref(cursor);

	for (logs = lv->logs; logs != NULL; logs = logs->next) {
		char *read = gaim_log_read((GaimLog*)logs->data, NULL);
		if (gaim_strcasestr(read, search_term)) {
			GtkTreeIter iter;
			GaimLog *log = logs->data;
			char title[64];
			char *title_utf8; /* temporary variable for utf8 conversion */
			gaim_strftime(title, sizeof(title), "%c", localtime(&log->time));
			title_utf8 = gaim_utf8_try_convert(title);
			strncpy(title, title_utf8, sizeof(title));
			g_free(title_utf8);
			gtk_tree_store_append (lv->treestore, &iter, NULL);
			gtk_tree_store_set(lv->treestore, &iter,
					   0, title,
					   1, log, -1);
		}
		g_free(read);
	}


	cursor = gdk_cursor_new(GDK_LEFT_PTR);
	gdk_window_set_cursor(lv->window->window, cursor);
	gdk_cursor_unref(cursor);
}

static gboolean destroy_cb(GtkWidget *w, gint resp, struct log_viewer_hash_t *ht) {
	GaimGtkLogViewer *lv = syslog_viewer;

	if (ht != NULL) {
		lv = g_hash_table_lookup(log_viewers, ht);
		g_hash_table_remove(log_viewers, ht);

		if (ht->screenname != NULL)
			g_free(ht->screenname);

		g_free(ht);
	} else
		syslog_viewer = NULL;

	while (lv->logs != NULL) {
		GList *logs2;

		gaim_log_free((GaimLog *)lv->logs->data);

		logs2 = lv->logs->next;
		g_list_free_1(lv->logs);
		lv->logs = logs2;
	}

	if (lv->search != NULL)
		g_free(lv->search);

	g_free(lv);
	gtk_widget_destroy(w);

	return TRUE;
}

static void log_row_activated_cb(GtkTreeView *tv, GtkTreePath *path, GtkTreeViewColumn *col, GaimGtkLogViewer *viewer) {
	if (gtk_tree_view_row_expanded(tv, path))
		gtk_tree_view_collapse_row(tv, path);
	else
		gtk_tree_view_expand_row(tv, path, FALSE);
}

static void log_select_cb(GtkTreeSelection *sel, GaimGtkLogViewer *viewer) {
	GtkTreeIter   iter;
	GValue val = { 0, };
	GtkTreeModel *model = GTK_TREE_MODEL(viewer->treestore);
	GaimLog *log = NULL;
	GaimLogReadFlags flags;
	char *read = NULL;
	char time[64];

	if (!gtk_tree_selection_get_selected(sel, &model, &iter))
		return;
	gtk_tree_model_get_value (model, &iter, 1, &val);
	log = g_value_get_pointer(&val);
	g_value_unset(&val);

	if (log == NULL)
		return;

	if (log->type != GAIM_LOG_SYSTEM) {
		char *title;
		char *title_utf8; /* temporary variable for utf8 conversion */

		gaim_strftime(time, sizeof(time), "%c", localtime(&log->time));

		if (log->type == GAIM_LOG_CHAT)
			title = g_strdup_printf(_("Conversation in %s on %s"), log->name, time);
		else
			title = g_strdup_printf(_("Conversation with %s on %s"), log->name, time);

		title_utf8 = gaim_utf8_try_convert(title);
		g_free(title);

		title = g_strdup_printf("<span size='larger' weight='bold'>%s</span>", title_utf8);
		g_free(title_utf8);

		gtk_label_set_markup(GTK_LABEL(viewer->label), title);
		g_free(title);
	}

	read = gaim_log_read(log, &flags);
	viewer->flags = flags;

	gtk_imhtml_clear(GTK_IMHTML(viewer->imhtml));
	gtk_imhtml_set_protocol_name(GTK_IMHTML(viewer->imhtml),
	                            gaim_account_get_protocol_name(log->account));
	gtk_imhtml_append_text(GTK_IMHTML(viewer->imhtml), read,
			       GTK_IMHTML_NO_COMMENTS | GTK_IMHTML_NO_TITLE | GTK_IMHTML_NO_SCROLL |
			       ((flags & GAIM_LOG_READ_NO_NEWLINE) ? GTK_IMHTML_NO_NEWLINE : 0));

	if (viewer->search != NULL) {
		gtk_imhtml_search_clear(GTK_IMHTML(viewer->imhtml));
		gtk_imhtml_search_find(GTK_IMHTML(viewer->imhtml), viewer->search);
	}

	g_free(read);
}

/* I want to make this smarter, but haven't come up with a cool algorithm to do so, yet.
 * I want the tree to be divided into groups like "Today," "Yesterday," "Last week,"
 * "August," "2002," etc. based on how many conversation took place in each subdivision.
 *
 * For now, I'll just make it a flat list.
 */
static void populate_log_tree(GaimGtkLogViewer *lv)
     /* Logs are made from trees in real life. 
        This is a tree made from logs */
{
	char month[30];
	char title[64];
	char prev_top_month[30] = "";
	char *utf8_tmp; /* temporary variable for utf8 conversion */
	GtkTreeIter toplevel, child;
	GList *logs = lv->logs;

	while (logs != NULL) {
		GaimLog *log = logs->data;

		gaim_strftime(month, sizeof(month), "%B %Y", localtime(&log->time));
		gaim_strftime(title, sizeof(title), "%c", localtime(&log->time));

		/* do utf8 conversions */
		utf8_tmp = gaim_utf8_try_convert(month);
		strncpy(month, utf8_tmp, sizeof(month));
		g_free(utf8_tmp);
		utf8_tmp = gaim_utf8_try_convert(title);
		strncpy(title, utf8_tmp, sizeof(title));
		g_free(utf8_tmp);

		if (strncmp(month, prev_top_month, sizeof(month)) != 0) {
			/* top level */
			gtk_tree_store_append(lv->treestore, &toplevel, NULL);
			gtk_tree_store_set(lv->treestore, &toplevel, 0, month, 1, NULL, -1);

			strncpy(prev_top_month, month, sizeof(prev_top_month));
		}

		/* sub */
		gtk_tree_store_append(lv->treestore, &child, &toplevel);
		gtk_tree_store_set(lv->treestore, &child, 0, title, 1, log, -1);

		logs = logs->next;
	}
}

static GaimGtkLogViewer *display_log_viewer(struct log_viewer_hash_t *ht, GList *logs,
						const char *title, GdkPixbuf *pixbuf)
{
	GaimGtkLogViewer *lv;
	GtkWidget *title_box;
	char *text;

	lv = g_new0(GaimGtkLogViewer, 1);
	lv->logs = logs;

	if (ht != NULL)
		g_hash_table_insert(log_viewers, ht, lv);

	/* Window ***********/
	lv->window = gtk_dialog_new_with_buttons(title, NULL, 0,
					     GTK_STOCK_CLOSE, GTK_RESPONSE_CLOSE, NULL);
	gtk_container_set_border_width (GTK_CONTAINER(lv->window), GAIM_HIG_BOX_SPACE);
	gtk_dialog_set_has_separator(GTK_DIALOG(lv->window), FALSE);
	gtk_box_set_spacing(GTK_BOX(GTK_DIALOG(lv->window)->vbox), 0);
	g_signal_connect(G_OBJECT(lv->window), "response",
					 G_CALLBACK(destroy_cb), ht);
	gtk_window_set_role(GTK_WINDOW(lv->window), "log_viewer");

	/* Icon *************/
	if (pixbuf != NULL) {
		GdkPixbuf *scale;
		GtkWidget *icon;

		title_box = gtk_hbox_new(FALSE, GAIM_HIG_BOX_SPACE);
		gtk_container_set_border_width(GTK_CONTAINER(title_box), GAIM_HIG_BOX_SPACE);
		gtk_box_pack_start(GTK_BOX(GTK_DIALOG(lv->window)->vbox), title_box, FALSE, FALSE, 0);

		scale = gdk_pixbuf_scale_simple(pixbuf, 16, 16, GDK_INTERP_BILINEAR);
		icon = gtk_image_new_from_pixbuf(scale);
		gtk_box_pack_start(GTK_BOX(title_box), icon, FALSE, FALSE, 0);
		g_object_unref(G_OBJECT(pixbuf));
		g_object_unref(G_OBJECT(scale));
	} else
		title_box = GTK_DIALOG(lv->window)->vbox;

	/* Label ************/
	lv->label = gtk_label_new(NULL);

	text = g_strdup_printf("<span size='larger' weight='bold'>%s</span>", title);

	gtk_label_set_markup(GTK_LABEL(lv->label), text);
	gtk_misc_set_alignment(GTK_MISC(lv->label), 0, 0);
	gtk_box_pack_start(GTK_BOX(title_box), lv->label, FALSE, FALSE, 0);
	g_free(text);

	if (logs != NULL) {
		GtkWidget *pane;
		GtkWidget *sw;
		GtkCellRenderer *rend;
		GtkTreeViewColumn *col;
		GtkTreeSelection *sel;
		GtkWidget *vbox;
		GtkWidget *frame;
		GtkWidget *hbox;
		GtkWidget *button;

		/* Pane *************/
		pane = gtk_hpaned_new();
		gtk_container_set_border_width(GTK_CONTAINER(pane), GAIM_HIG_BOX_SPACE);
		gtk_box_pack_start(GTK_BOX(GTK_DIALOG(lv->window)->vbox), pane, TRUE, TRUE, 0);

		/* List *************/
		sw = gtk_scrolled_window_new (NULL, NULL);
		gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (sw), GTK_SHADOW_IN);
		gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(sw), GTK_POLICY_NEVER, GTK_POLICY_ALWAYS);
		gtk_paned_add1(GTK_PANED(pane), sw);
		lv->treestore = gtk_tree_store_new (2, G_TYPE_STRING, G_TYPE_POINTER);
		lv->treeview = gtk_tree_view_new_with_model (GTK_TREE_MODEL (lv->treestore));
		rend = gtk_cell_renderer_text_new();
		col = gtk_tree_view_column_new_with_attributes ("time", rend, "markup", 0, NULL);
		gtk_tree_view_append_column (GTK_TREE_VIEW(lv->treeview), col);
		gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (lv->treeview), FALSE);
		gtk_container_add (GTK_CONTAINER (sw), lv->treeview);
	
		populate_log_tree(lv);
	
		sel = gtk_tree_view_get_selection (GTK_TREE_VIEW (lv->treeview));
		g_signal_connect (G_OBJECT (sel), "changed",
				G_CALLBACK (log_select_cb),
				lv);
		g_signal_connect (G_OBJECT(lv->treeview), "row-activated",
				G_CALLBACK(log_row_activated_cb),
				lv);
		gaim_set_accessible_label(lv->treeview, lv->label);
	
		/* A fancy little box ************/
		vbox = gtk_vbox_new(FALSE, GAIM_HIG_BOX_SPACE);
		gtk_paned_add2(GTK_PANED(pane), vbox);
	
		/* Viewer ************/
		frame = gaim_gtk_create_imhtml(FALSE, &lv->imhtml, NULL);
		gtk_widget_set_name(lv->imhtml, "gaim_gtklog_imhtml");
		gtk_widget_set_size_request(lv->imhtml, 320, 200);
		gtk_box_pack_start(GTK_BOX(vbox), frame, TRUE, TRUE, 0);
		gtk_widget_show(frame);
	
		/* Search box **********/
		hbox = gtk_hbox_new(FALSE, GAIM_HIG_BOX_SPACE);
		gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 0);
		lv->entry = gtk_entry_new();
		gtk_box_pack_start(GTK_BOX(hbox), lv->entry, TRUE, TRUE, 0);
		button = gtk_button_new_from_stock(GTK_STOCK_FIND);
		gtk_box_pack_start(GTK_BOX(hbox), button, FALSE, FALSE, 0);
		g_signal_connect(GTK_ENTRY(lv->entry), "activate", G_CALLBACK(search_cb), lv);
		g_signal_connect(GTK_BUTTON(button), "activate", G_CALLBACK(search_cb), lv);
		g_signal_connect(GTK_BUTTON(button), "clicked", G_CALLBACK(search_cb), lv);
	} else {
		/* No logs were found. */
		const char *log_preferences = NULL;
  GtkWidget *label;

		if (ht == NULL) {
			if (!gaim_prefs_get_bool("/core/logging/log_system"))
				log_preferences = _("System events will only be logged if the <span style=\"italic\">Enable system log preference</span> is set.");
		} else {
			if (ht->type == GAIM_LOG_IM) {
				if (!gaim_prefs_get_bool("/core/logging/log_ims"))
					log_preferences = _("Instant messages will only be logged if the <span style=\"italic\">Log all instant messages</span> preference is enabled.");
			} else if (ht->type == GAIM_LOG_CHAT) {
				if (!gaim_prefs_get_bool("/core/logging/log_chats"))
					log_preferences = _("Chats will only be logged if the <span style=\"italic\">Log all chats preference</span> is enabled.");
			}
		}

		text = g_strdup_printf("\n<span weight=\"bold\">%s</span>%s%s\n",
				_("No logs were found."),
				log_preferences ? "\n" : "",
				log_preferences ? log_preferences : "");

		label = gtk_label_new(NULL);

		gtk_label_set_markup(GTK_LABEL(label), text);
		gtk_label_set_line_wrap(GTK_LABEL(label), TRUE);
		gtk_misc_set_alignment(GTK_MISC(label), 0, 0);
		gtk_box_pack_start(GTK_BOX(GTK_DIALOG(lv->window)->vbox), label, FALSE, FALSE, 0);
		g_free(text);
	}

	gtk_widget_show_all(lv->window);

	return lv;
}

void gaim_gtk_log_show(GaimLogType type, const char *screenname, GaimAccount *account) {
	struct log_viewer_hash_t *ht = g_new0(struct log_viewer_hash_t, 1);
	GaimGtkLogViewer *lv = NULL;
	const char *name = screenname;
	char *title;

	g_return_if_fail(account != NULL);
	g_return_if_fail(screenname != NULL);

	ht->type = type;
	ht->screenname = g_strdup(screenname);
	ht->account = account;

	if (log_viewers == NULL) {
		log_viewers = g_hash_table_new(log_viewer_hash, log_viewer_equal);
	} else if ((lv = g_hash_table_lookup(log_viewers, ht))) {
		gtk_window_present(GTK_WINDOW(lv->window));
		g_free(ht);
		return;
	}

	if (type == GAIM_LOG_CHAT) {
		GaimChat *chat;

		chat = gaim_blist_find_chat(account, screenname);
		if (chat != NULL)
			name = gaim_chat_get_name(chat);

		title = g_strdup_printf(_("Conversations in %s"), name);
	} else {
		GaimBuddy *buddy;

		buddy = gaim_find_buddy(account, screenname);
		if (buddy != NULL)
			name = gaim_buddy_get_contact_alias(buddy);

		title = g_strdup_printf(_("Conversations with %s"), name);
	}

	display_log_viewer(ht, gaim_log_get_logs(type, screenname, account),
			title, gaim_gtk_create_prpl_icon(account));
	g_free(title);
}

void gaim_gtk_log_show_contact(GaimContact *contact) {
	struct log_viewer_hash_t *ht = g_new0(struct log_viewer_hash_t, 1);
	GaimBlistNode *child;
	GaimGtkLogViewer *lv = NULL;
	GList *logs = NULL;
	char *filename;
	GdkPixbuf *pixbuf;
	const char *name = NULL;
	char *title;

	g_return_if_fail(contact != NULL);

	ht->type = GAIM_LOG_IM;
	ht->contact = contact;

	if (log_viewers == NULL) {
		log_viewers = g_hash_table_new(log_viewer_hash, log_viewer_equal);
	} else if ((lv = g_hash_table_lookup(log_viewers, ht))) {
		gtk_window_present(GTK_WINDOW(lv->window));
		g_free(ht);
		return;
	}

	for (child = contact->node.child ; child ; child = child->next) {
		if (!GAIM_BLIST_NODE_IS_BUDDY(child))
			continue;

		logs = g_list_concat(logs,
			gaim_log_get_logs(GAIM_LOG_IM, ((GaimBuddy *)child)->name,
						((GaimBuddy *)child)->account));
	}
	logs = g_list_sort(logs, gaim_log_compare);

	filename = g_build_filename(DATADIR, "pixmaps", "gaim", "icons", "online.png", NULL);
	pixbuf = gdk_pixbuf_new_from_file(filename, NULL);
	g_free(filename);

	if (contact->alias != NULL)
		name = contact->alias;
	else if (contact->priority != NULL)
		name = gaim_buddy_get_contact_alias(contact->priority);

	title = g_strdup_printf(_("Conversations with %s"), name);
	display_log_viewer(ht, logs, title, pixbuf);
	g_free(title);
}

void gaim_gtk_syslog_show()
{
	GList *accounts = NULL;
	GList *logs = NULL;

	if (syslog_viewer != NULL) {
		gtk_window_present(GTK_WINDOW(syslog_viewer->window));
		return;
	}

	for(accounts = gaim_accounts_get_all(); accounts != NULL; accounts = accounts->next) {

		GaimAccount *account = (GaimAccount *)accounts->data;
		if(gaim_find_prpl(gaim_account_get_protocol_id(account)) == NULL)
			continue;

		logs = g_list_concat(logs, gaim_log_get_system_logs(account));
	}
	logs = g_list_sort(logs, gaim_log_compare);

	syslog_viewer = display_log_viewer(NULL, logs, _("System Log"), NULL);
}