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// SPDX-License-Identifier: GPL-2.0
#include "../util.h"
#include "gtk.h"
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <linux/compiler.h>
#include <linux/zalloc.h>
struct perf_gtk_context *pgctx;
struct perf_gtk_context *perf_gtk__activate_context(GtkWidget *window)
{
struct perf_gtk_context *ctx;
ctx = malloc(sizeof(*pgctx));
if (ctx)
ctx->main_window = window;
return ctx;
}
int perf_gtk__deactivate_context(struct perf_gtk_context **ctx)
{
if (!perf_gtk__is_active_context(*ctx))
return -1;
zfree(ctx);
return 0;
}
/*
* perf_gtk__error() can be called re-entrantly, since the dialog isn't
* modal and its nested loop still pumps events for the main window.
* Track every currently running loop instead of a single pointer, so a
* nested call can't clobber an outer call's loop and leak it.
*/
static GSList *perf_gtk__error_loops;
static void perf_gtk__quit_loop(gpointer data, gpointer user_data __maybe_unused)
{
g_main_loop_quit(data);
}
void perf_gtk__quit_error_dialog(void)
{
g_slist_foreach(perf_gtk__error_loops, perf_gtk__quit_loop, NULL);
}
static void perf_gtk__dialog_response(GtkDialog *dialog,
gint response_id __maybe_unused,
gpointer data __maybe_unused)
{
gtk_window_destroy(GTK_WINDOW(dialog));
}
static int perf_gtk__error(const char *format, va_list args)
{
char *msg;
GtkWidget *dialog;
GMainLoop *loop;
va_list args_copy;
va_copy(args_copy, args);
if (!perf_gtk__is_active_context(pgctx) ||
vasprintf(&msg, format, args_copy) < 0) {
va_end(args_copy);
fprintf(stderr, "Error:\n");
vfprintf(stderr, format, args);
fprintf(stderr, "\n");
return -1;
}
va_end(args_copy);
dialog = gtk_message_dialog_new_with_markup(GTK_WINDOW(pgctx->main_window),
GTK_DIALOG_DESTROY_WITH_PARENT,
GTK_MESSAGE_ERROR,
GTK_BUTTONS_CLOSE,
"<b>Error</b>\n\n%s", msg);
/*
* "response" only fires when a button is clicked; DESTROY_WITH_PARENT
* destroys the dialog directly without it. Quit from "destroy"
* instead, which fires either way, so the nested loop below can't
* outlive the dialog and hang.
*/
loop = g_main_loop_new(NULL, FALSE);
perf_gtk__error_loops = g_slist_prepend(perf_gtk__error_loops, loop);
g_signal_connect(dialog, "response",
G_CALLBACK(perf_gtk__dialog_response), NULL);
g_signal_connect_swapped(dialog, "destroy",
G_CALLBACK(g_main_loop_quit), loop);
gtk_widget_set_visible(dialog, TRUE);
g_main_loop_run(loop);
perf_gtk__error_loops = g_slist_remove(perf_gtk__error_loops, loop);
g_main_loop_unref(loop);
free(msg);
return 0;
}
static int perf_gtk__warning_info_bar(const char *format, va_list args)
{
char *msg;
va_list args_copy;
va_copy(args_copy, args);
if (!perf_gtk__is_active_context(pgctx) ||
vasprintf(&msg, format, args_copy) < 0) {
va_end(args_copy);
fprintf(stderr, "Warning:\n");
vfprintf(stderr, format, args);
fprintf(stderr, "\n");
return -1;
}
va_end(args_copy);
gtk_label_set_text(GTK_LABEL(pgctx->message_label), msg);
gtk_info_bar_set_message_type(GTK_INFO_BAR(pgctx->info_bar),
GTK_MESSAGE_WARNING);
gtk_widget_set_visible(pgctx->info_bar, TRUE);
free(msg);
return 0;
}
struct perf_error_ops perf_gtk_eops = {
.error = perf_gtk__error,
.warning = perf_gtk__warning_info_bar,
};
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