Webkit GTK ::如何检测下载何时完成？
我想知道是否有办法知道webkitdownload何时完成而没有错误。 我正在使用C API。 我希望发出一个信号（类似于下载开始时），但似乎并非如此。
搜索webkit API索引，我看不到可能相关的信号： http ：//webkitgtk.org/reference/index-all.html
我必须真正轮询每个webkit下载，直到它完成为止？
干杯
下载完成后会发出一个信号。 信号是WebKitWebView“加载完成”，您还可以在对象WebKitWebView中监视“加载状态”的属性更改。
以下C代码向您展示如何：
#include #include static void destroy_cb(GtkWidget* widget, gpointer data) { gtk_main_quit(); } static void load_finished_cb(WebKitWebView *web_view, WebKitWebFrame *web_frame, gpointer data) { printf("Finished downloading %s\n", webkit_web_view_get_uri(web_view)); } static void load_status_cb(GObject* object, GParamSpec* pspec, gpointer data) { WebKitWebView *web_view; WebKitLoadStatus status; const gchar *uri; web_view = WEBKIT_WEB_VIEW(object); status = webkit_web_view_get_load_status(web_view); uri = webkit_web_view_get_uri(web_view); switch (status) { case WEBKIT_LOAD_PROVISIONAL: printf("Load provisional: %s\n", uri); break; case WEBKIT_LOAD_COMMITTED: printf("Load commited: %s\n", uri); break; case WEBKIT_LOAD_FIRST_VISUALLY_NON_EMPTY_LAYOUT: printf("Load first visually non empty layout: %s\n", uri); break; case WEBKIT_LOAD_FINISHED: printf("Load finished: %s\n", uri); break; default: g_assert_not_reached(); } } int main(int argc, char* argv[]) { const char *uri; GtkWidget* window; WebKitWebView* web_view; gtk_init(&argc, &argv); if (argc == 1) { printf("Usage: URI\n"); return 1; } uri = argv[1]; if(!g_thread_supported()) g_thread_init(NULL); window = gtk_window_new(GTK_WINDOW_TOPLEVEL); gtk_window_set_default_size(GTK_WINDOW(window), 600, 400); g_signal_connect(window, "destroy", G_CALLBACK(destroy_cb), NULL); web_view = web_view = WEBKIT_WEB_VIEW(webkit_web_view_new()); webkit_web_view_set_transparent(web_view, TRUE); /* Register a callback that gets invoked each time that a page is finished downloading */ g_signal_connect(web_view, "load-finished", G_CALLBACK(load_finished_cb), NULL); /* Register a callback that gets invoked each time that the load status changes */ g_object_connect(web_view, "signal::notify::load-status", G_CALLBACK(load_status_cb), NULL); webkit_web_view_load_uri(web_view, uri); gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(web_view)); gtk_widget_grab_focus(GTK_WIDGET(web_view)); gtk_widget_show_all(window); gtk_main(); return 0; } 您可以使用“下载请求的” WebView信号来获取WebKitDownload 。 然后使用’ WebKitDownload信号，就像使用WebView的加载状态更改一样。
我在Python中遇到了这个问题，所以我将从下面的错误翻译开始。
def on_download_requested(webview, download): #set the destination uri (downloads folder, etc) ... #connect the status change handler download.connect('notify::status', on_download_status_change) return True def on_download_status_change(download, status): #get the status from download, since the provided status is a little weird #(i think this is specific to the binding) if download.get_status().value_name == 'WEBKIT_DOWNLOAD_STATUS_ERROR': #error handling ... elif download.get_status().value_name == 'WEBKIT_DOWNLOAD_STATUS_FINISHED': #the download is finished! ... else: ...
或者，修改@ potyl对C版本的答案……看起来非常简单。
#include #include static void destroy_cb(GtkWidget* widget, gpointer data) { gtk_main_quit(); } static void download_status_cb(GObject* object, GParamSpec* pspec, gpointer data){ //WebKitDownload *download, GObject* object, GParamSpec* pspec, gpointer data) { WebKitDownload *download; WebKitDownloadStatus status; concst gchar *uri; download = WEBKIT_DOWNLOAD(object); status = webkit_download_get_status(download); uri = webkit_download_get_uri(download): switch (status) { case WEBKIT_DOWNLOAD_STATUS_ERROR: printf("download error: %s\n", uri); break; case WEBKIT_DOWNLOAD_STATUS_CREATED: printf("download created: %s\n", uri); break; case WEBKIT_DOWNLOAD_STATUS_STARTED: printf("download started: %s\n", uri); break; case WEBKIT_DOWNLOAD_STATUS_CANCELLED: printf("download cancelled: %s\n", uri); break; case WEBKIT_DOWNLOAD_STATUS_FINISHED: printf("download finished!: %s\n", uri); break; default: g_assert_not_reached(); } } static void download_requested_cb(WebKitWebView *web_view, WebKitDownload *download) { const char *filename; //note that if the suggested filename has spaces, it'll cause trouble below filename = webkit_download_get_suggested_filename(); //set the destination uri (eg, send the file to a downloads folder) webkit_download_set_destination_uri(download,"file:///some/place/for/your/Downloads/test.mp3"); //connect the status callback g_object_connect(download, "signal::notify::status", G_CALLBACK(download_status_cb), NULL); return true; //if we return false, the download will be cancelled } int main(int argc, char* argv[]) { const char *uri; GtkWidget* window; WebKitWebView* web_view; gtk_init(&argc, &argv); if (argc == 1) { printf("Usage: URI\n"); return 1; } uri = argv[1]; if(!g_thread_supported()) g_thread_init(NULL); window = gtk_window_new(GTK_WINDOW_TOPLEVEL); gtk_window_set_default_size(GTK_WINDOW(window), 600, 400); g_signal_connect(window, "destroy", G_CALLBACK(destroy_cb), NULL); web_view = web_view = WEBKIT_WEB_VIEW(webkit_web_view_new()); webkit_web_view_set_transparent(web_view, TRUE); /* Register a callback that gets invoked each time that a page is finished downloading */ g_signal_connect(web_view, "load-finished", G_CALLBACK(load_finished_cb), NULL); /* Register a callback that gets invoked each time a download is requested */ g_object_connect(web_view, "download-requested", G_CALLBACK(download_requested_cb), NULL); webkit_web_view_load_uri(web_view, uri); gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(web_view)); gtk_widget_grab_focus(GTK_WIDGET(web_view)); gtk_widget_show_all(window); gtk_main(); return 0; }
希望丑陋，未经测试的C翻译有帮助:)
看起来您必须手动轮询WebKitDownload ：
WebKitDownloadStatus s = webkit_download_get_status(downloader); if(s == WEBKIT_DOWNLOAD_STATUS_FINISHED) { /* The download has successfully finished. */ } else if(s == WEBKIT_DOWNLOAD_STATUS_STARTED) { /* Still going, 100*webkit_download_get_progress(downloader) percent complete. */ }