Work in progress, HIG'ing and de-coupling of errors.

svn path=/trunk/; revision=25493

2 files changed, 590 insertions, 0 deletions

diff --git a/widgets/misc/e-error.c b/widgets/misc/e-error.c
new file mode 100644
index 0000000000..f7cc9ee7bf
--- /dev/null
+++ b/widgets/misc/e-error.c
@@ -0,0 +1,550 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- *
+ *
+ *  Authors: Michael Zucchi <notzed@ximian.com>
+ *
+ *  Copyright 2004 Novell Inc. (www.novell.com)
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of version 2 of the GNU General Public
+ *  License as published by the Free Software Foundation.
+ *
+ *  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 Street #330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#include <string.h>
+#include <sys/types.h>
+#include <dirent.h>
+
+#include <libxml/parser.h>
+#include <libxml/xmlmemory.h>
+
+#include <glib.h>
+#include <gtk/gtkhbox.h>
+#include <gtk/gtkstock.h>
+#include <gtk/gtkdialog.h>
+#include <gtk/gtkwindow.h>
+#include <gtk/gtklabel.h>
+#include <gtk/gtkimage.h>
+
+#include <libgnome/gnome-i18n.h>
+
+#include "e-error.h"
+
+#define d(x) x
+
+struct _e_error_button {
+	struct _e_error_button *next;
+	char *stock;
+	char *label;
+	int response;
+};
+
+struct _e_error {
+	guint32 flags;
+	char *id;
+	int type;
+	int default_response;
+	char *title;
+	char *primary;
+	char *secondary;
+	struct _e_error_button *buttons;
+};
+
+struct _e_error_table {
+	char *domain;
+	GHashTable *errors;
+};
+
+static GHashTable *error_table;
+
+/* ********************************************************************** */
+
+static struct _e_error_button default_ok_button = {
+	NULL, "gtk-ok", NULL, GTK_RESPONSE_OK
+};
+
+static struct _e_error default_errors[] = {
+	{ GTK_DIALOG_MODAL, "error", 3, GTK_RESPONSE_OK, N_("Evolution Error"), "{0}", "{1}", &default_ok_button },
+	{ GTK_DIALOG_MODAL, "error-primary", 3, GTK_RESPONSE_OK, N_("Evolution Error"), "{0}", NULL, &default_ok_button },
+	{ GTK_DIALOG_MODAL, "warning", 1, GTK_RESPONSE_OK, N_("Evolution Warning"), "{0}", "{1}", &default_ok_button },
+	{ GTK_DIALOG_MODAL, "warning-primary", 1, GTK_RESPONSE_OK, N_("Evolution Warning"), "{0}", NULL, &default_ok_button },
+};
+
+/* ********************************************************************** */
+
+static struct {
+	char *name;
+	int id;
+} response_map[] = {
+	{ "GTK_RESPONSE_REJECT", GTK_RESPONSE_REJECT },
+	{ "GTK_RESPONSE_ACCEPT", GTK_RESPONSE_ACCEPT },
+	{ "GTK_RESPONSE_OK", GTK_RESPONSE_OK },
+	{ "GTK_RESPONSE_CANCEL", GTK_RESPONSE_CANCEL },
+	{ "GTK_RESPONSE_CLOSE", GTK_RESPONSE_CLOSE },
+	{ "GTK_RESPONSE_YES", GTK_RESPONSE_YES },
+	{ "GTK_RESPONSE_NO", GTK_RESPONSE_NO },
+	{ "GTK_RESPONSE_APPLY", GTK_RESPONSE_APPLY },
+	{ "GTK_RESPONSE_HELP", GTK_RESPONSE_HELP },
+};
+
+static int
+map_response(const char *name)
+{
+	int i;
+	
+	for (i=0;i<sizeof(response_map)/sizeof(response_map[0]);i++)
+		if (!strcmp(name, response_map[i].name))
+			return response_map[i].id;
+
+	return 0;
+}
+
+static struct {
+	const char *name;
+	const char *icon;
+	const char *title;
+} type_map[] = {
+	{ "info", GTK_STOCK_DIALOG_INFO, N_("Evolution Information") },
+	{ "warning", GTK_STOCK_DIALOG_WARNING, N_("Evolution Warning") },
+	{ "question", GTK_STOCK_DIALOG_QUESTION, N_("Evolution Query") },
+	{ "error", GTK_STOCK_DIALOG_ERROR, N_("Evolution Error") },
+};
+
+static int
+map_type(const char *name)
+{
+	int i;
+
+	if (name) {
+		for (i=0;i<sizeof(type_map)/sizeof(type_map[0]);i++)
+			if (!strcmp(name, type_map[i].name))
+				return i;
+	}
+
+	return 3;
+}
+
+static const GList *lang_list;
+
+/* Finds the right node for the current language. */
+static xmlNodePtr
+find_node(xmlNodePtr base, const char *name)
+{
+	const GList *l;
+	xmlNodePtr scan, langc=NULL;
+
+	if (lang_list == NULL)
+		lang_list = gnome_i18n_get_language_list("LC_MESSAGES");
+
+	/* This is, like, way shitful, very slow, terribly inefficient ... sigh */
+	for (l=lang_list;l;l=l->next) {
+		const char *lang = l->data;
+
+		for (scan = base;scan;scan=scan->next) {
+			if (!strcmp(scan->name, name)) {
+				char *xmllang = xmlGetProp(scan, "xml:lang");
+
+				if (xmllang) {
+					if (!strcmp(xmllang, lang)) {
+						xmlFree(xmllang);
+						return scan;
+					}
+					xmlFree(xmllang);
+				} else {
+					langc = scan;
+					if (strcmp(lang, "C") == 0)
+						return scan;
+				}
+			}
+		}
+	}
+
+	return langc;
+}
+
+/*
+  XML format:
+
+ <error id="error-id" type="info|warning|question|error"? response="default_response"? modal="true"? >
+  <_title>Window Title</_title>?
+  <_primary>Primary error text.</_primary>?
+  <_secondary>Secondary error text.</_secondary>?
+  <button ( stock="stock-button-id" | _label="button label" ) response="response_id"? > *
+ </error>
+
+ Because we use intltool we need to do some weird shit to do with
+ languages.  title, primary and secondary will be expanded into
+ per-language tags, specified using xml:lang property.
+
+ The _label property will remain as plain english and we need to use
+ gettext to extract it.
+*/
+static void
+ee_load(const char *path)
+{
+	xmlDocPtr doc;
+	xmlNodePtr root, error, scan, node;
+	struct _e_error *e;
+	struct _e_error_button *lastbutton;
+	struct _e_error_table *table;
+	char *tmp;
+
+	d(printf("loading error file %s\n", path));
+	
+	doc = xmlParseFile(path);
+	if (doc == NULL) {
+		g_warning("Error file '%s' not found", path);
+		return;
+	}
+
+	root = xmlDocGetRootElement(doc);
+	if (root == NULL
+	    || strcmp(root->name, "error-list") != 0
+	    || (tmp = xmlGetProp(root, "domain")) == NULL) {
+		g_warning("Error file '%s' invalid format", path);
+		xmlFreeDoc(doc);
+		return;
+	}
+
+	table = g_malloc0(sizeof(*table));
+	table->domain = g_strdup(tmp);
+	g_free(tmp);
+	table->errors = g_hash_table_new(g_str_hash, g_str_equal);
+
+	for (error = root->children;error;error = error->next) {
+		if (!strcmp(error->name, "error")) {
+			tmp = xmlGetProp(error, "id");
+			if (tmp == NULL)
+				continue;
+
+			e = g_malloc0(sizeof(*e));
+			e->id = g_strdup(tmp);
+			xmlFree(tmp);
+			lastbutton = (struct _e_error_button *)&e->buttons;
+
+			tmp = xmlGetProp(error, "modal");
+			if (tmp) {
+				if (!strcmp(tmp, "true"))
+					e->flags |= GTK_DIALOG_MODAL;
+				xmlFree(tmp);
+			}
+
+			tmp = xmlGetProp(error, "type");
+			e->type = map_type(tmp);
+			if (tmp)
+				xmlFree(tmp);
+
+			tmp = xmlGetProp(error, "default");
+			if (tmp) {
+				e->default_response = map_response(tmp);
+				xmlFree(tmp);
+			}
+
+			node = find_node(error->children, "primary");
+			if (node && (tmp = xmlNodeGetContent(node))) {
+				e->primary = g_strdup(tmp);
+				xmlFree(tmp);
+			}
+
+			node = find_node(error->children, "secondary");
+			if (node && (tmp = xmlNodeGetContent(node))) {
+				e->secondary = g_strdup(tmp);
+				xmlFree(tmp);
+			}
+
+			node = find_node(error->children, "title");
+			if (node && (tmp = xmlNodeGetContent(node))) {
+				e->title = g_strdup(tmp);
+				xmlFree(tmp);
+			}
+
+			for (scan = error->children;scan;scan=scan->next) {
+				if (!strcmp(scan->name, "button")) {
+					struct _e_error_button *b;
+
+					b = g_malloc0(sizeof(*b));
+					tmp = xmlGetProp(scan, "stock");
+					if (tmp) {
+						b->stock = g_strdup(tmp);
+						xmlFree(tmp);
+					}
+					tmp = xmlGetProp(scan, "label");
+					if (tmp) {
+						b->label = g_strdup(_(tmp));
+						xmlFree(tmp);
+					}
+					tmp = xmlGetProp(scan, "response");
+					if (tmp) {
+						b->response = map_response(tmp);
+						xmlFree(tmp);
+					}
+
+					if (b->stock == NULL && b->label == NULL) {
+						g_warning("Error file '%s': missing button details in error '%s'", path, e->id);
+						g_free(b->stock);
+						g_free(b->label);
+						g_free(b);
+					} else {
+						lastbutton->next = b;
+						lastbutton = b;
+					}
+				}
+			}
+
+			g_hash_table_insert(table->errors, e->id, e);
+		}
+	}
+
+	xmlFreeDoc(doc);
+
+	g_hash_table_insert(error_table, table->domain, table);
+}
+
+static void
+ee_load_tables(void)
+{
+	DIR *dir;
+	struct dirent *d;
+	const char *base = EVOLUTION_PRIVDATADIR "/errors";
+	struct _e_error_table *table;
+	int i;
+
+	if (error_table != NULL)
+		return;
+
+	error_table = g_hash_table_new(g_str_hash, g_str_equal);
+
+	/* setup system error types */
+	table = g_malloc0(sizeof(*table));
+	table->domain = "system";
+	table->errors = g_hash_table_new(g_str_hash, g_str_equal);
+	for (i=0;i<sizeof(default_errors)/sizeof(default_errors[0]);i++)
+		g_hash_table_insert(table->errors, default_errors[i].id, &default_errors[i]);
+	g_hash_table_insert(error_table, table->domain, table);
+
+	/* look for installed error tables */
+	dir = opendir(base);
+	if (dir == NULL)
+		return;
+
+	while ( (d = readdir(dir)) ) {
+		char *path;
+
+		if (d->d_name[0] == '.')
+			continue;
+
+		path = g_build_filename(base, d->d_name, NULL);
+		ee_load(path);
+		g_free(path);
+	}
+
+	closedir(dir);
+}
+
+static void
+ee_build_label(GString *out, const char *fmt, GPtrArray *args)
+{
+	const char *end, *newstart;
+	int id;
+
+	while (fmt
+	       && (newstart = strchr(fmt, '{'))
+	       && (end = strchr(newstart+1, '}'))) {
+		g_string_append_len(out, fmt, newstart-fmt);
+		id = atoi(newstart+1);
+		if (id < args->len)
+			g_string_append(out, args->pdata[id]);
+		else
+			g_warning("Error references argument %d not supplied by caller", id);
+		fmt = end+1;
+	}
+
+	g_string_append(out, fmt);
+}
+
+GtkWidget *
+e_error_newv(GtkWindow *parent, const char *tag, const char *arg0, va_list ap)
+{
+	struct _e_error_table *table;
+	struct _e_error *e;
+	struct _e_error_button *b;
+	GtkWidget *hbox, *w;
+	char *tmp, *domain, *id;
+	GString *out;
+	GPtrArray *args;
+	GtkDialog *dialog;
+
+	if (error_table == NULL)
+		ee_load_tables();
+
+	dialog = (GtkDialog *)gtk_dialog_new();
+	gtk_dialog_set_has_separator(dialog, FALSE);
+
+	if (parent)
+		gtk_window_set_transient_for((GtkWindow *)dialog, parent);
+
+	domain = alloca(strlen(tag)+1);
+	strcpy(domain, tag);
+	id = strchr(domain, ':');
+	if (id)
+		*id++ = 0;
+
+	if ( id == NULL
+	     || (table = g_hash_table_lookup(error_table, domain)) == NULL
+	     || (e = g_hash_table_lookup(table->errors, id)) == NULL) {
+		/* setup a dummy error */
+		tmp = g_strdup_printf(_("<span weight=\"bold\">Internal error, unknown error '%s' requested</span>"), tag);
+		w = gtk_label_new(NULL);
+		gtk_label_set_line_wrap((GtkLabel *)w, TRUE);
+		gtk_label_set_markup((GtkLabel *)w, tmp);
+		gtk_widget_show(w);
+		gtk_box_pack_start((GtkBox *)dialog->vbox, w, TRUE, TRUE, 12);
+
+		return (GtkWidget *)dialog;
+	}
+
+	if (e->flags & GTK_DIALOG_MODAL)
+		gtk_window_set_modal((GtkWindow *)dialog, TRUE);
+	gtk_window_set_destroy_with_parent((GtkWindow *)dialog, TRUE);
+
+	b = e->buttons;
+	if (b == NULL) {
+		gtk_dialog_add_button(dialog, GTK_STOCK_OK, GTK_RESPONSE_OK);
+	} else {
+		for (b = e->buttons;b;b=b->next) {
+			/* TODO: allow stock icons on non-stock labels */
+			if (b->stock)
+				gtk_dialog_add_button(dialog, b->stock, b->response);
+			else
+				gtk_dialog_add_button(dialog, b->label, b->response);
+		}
+	}
+
+	if (e->default_response)
+		gtk_dialog_set_default_response(dialog, e->default_response);
+
+	hbox = gtk_hbox_new(FALSE, 0);
+	gtk_container_set_border_width((GtkContainer *)hbox, 12);
+
+	w = gtk_image_new_from_stock(type_map[e->type].icon, GTK_ICON_SIZE_DIALOG);
+	gtk_box_pack_start((GtkBox *)hbox, w, TRUE, TRUE, 12);
+
+	args = g_ptr_array_new();
+	tmp = (char *)arg0;
+	while (tmp) {
+		g_ptr_array_add(args, tmp);
+		tmp = va_arg(ap, char *);
+	}
+
+	out = g_string_new("");
+
+	if (e->title) {
+		ee_build_label(out, _(e->title), args);
+		gtk_window_set_title((GtkWindow *)dialog, _(e->title));
+		g_string_truncate(out, 0);
+	} else
+		gtk_window_set_title((GtkWindow *)dialog, _(type_map[e->type].title));
+
+
+	if (e->primary) {
+		g_string_append(out, "<span weight=\"bold\" size=\"larger\">");
+		ee_build_label(out, _(e->primary), args);
+		g_string_append(out, "</span>\n\n");
+	}
+
+	if (e->secondary)
+		ee_build_label(out, _(e->secondary), args);
+
+	g_ptr_array_free(args, TRUE);
+
+	w = gtk_label_new(NULL);
+	gtk_label_set_line_wrap((GtkLabel *)w, TRUE);
+	gtk_label_set_markup((GtkLabel *)w, out->str);
+	g_string_free(out, TRUE);
+	gtk_box_pack_start((GtkBox *)hbox, w, FALSE, FALSE, 0);
+	gtk_widget_show_all(hbox);
+
+	gtk_box_pack_start((GtkBox *)dialog->vbox, hbox, TRUE, TRUE, 0);
+
+	return (GtkWidget *)dialog;
+}
+
+/**
+ * e_error_new:
+ * @parent: 
+ * @tag: error identifier
+ * @arg0: The first argument for the error formatter.  The list must
+ * be NULL terminated.
+ * 
+ * Creates a new error widget.  The @tag argument is used to determine
+ * which error to use, it is in the format domain:error-id.  The NULL
+ * terminated list of arguments, starting with @arg0 is used to fill
+ * out the error definition.
+ * 
+ * Return value: A GtkDialog which can be used for showing an error
+ * dialog asynchronously.
+ **/
+struct _GtkWidget *
+e_error_new(struct _GtkWindow *parent, const char *tag, const char *arg0, ...)
+{
+	GtkWidget *w;
+	va_list ap;
+
+	va_start(ap, arg0);
+	w = e_error_newv(parent, tag, arg0, ap);
+	va_end(ap);
+
+	return w;
+}
+
+int
+e_error_runv(GtkWindow *parent, const char *tag, const char *arg0, va_list ap)
+{
+	GtkWidget *w;
+	int res;
+
+	w = e_error_newv(parent, tag, arg0, ap);
+
+	res = gtk_dialog_run((GtkDialog *)w);
+	gtk_widget_destroy(w);
+
+	return res;
+}
+
+/**
+ * e_error_run:
+ * @parent: 
+ * @tag: 
+ * @arg0: 
+ * 
+ * Sets up, displays, runs and destroys a standard evolution error
+ * dialog based on @tag, which is in the format domain:error-id.
+ * 
+ * Return value: The response id of the button pressed.
+ **/
+int
+e_error_run(GtkWindow *parent, const char *tag, const char *arg0, ...)
+{
+	GtkWidget *w;
+	va_list ap;
+	int res;
+
+	va_start(ap, arg0);
+	w = e_error_newv(parent, tag, arg0, ap);
+	va_end(ap);
+
+	res = gtk_dialog_run((GtkDialog *)w);
+	gtk_widget_destroy(w);
+
+	return res;
+}
+
+
diff --git a/widgets/misc/e-error.h b/widgets/misc/e-error.h
new file mode 100644
index 0000000000..9da24e6004
--- /dev/null
+++ b/widgets/misc/e-error.h
@@ -0,0 +1,40 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- *
+ *
+ *  Authors: Michael Zucchi <notzed@ximian.com>
+ *
+ *  Copyright 2004 Novell Inc. (www.novell.com)
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of version 2 of the GNU General Public
+ *  License as published by the Free Software Foundation.
+ *
+ *  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 Street #330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#ifndef _E_ERROR_H
+#define _E_ERROR_H
+
+#include <stdarg.h>
+
+struct _GtkWindow;
+
+#define E_ERROR_WARNING "system:warning"
+#define E_ERROR_WARNING_PRIMARY "system:warning-primary"
+#define E_ERROR_ERROR "system:error"
+#define E_ERROR_ERROR_PRIMARY "system:error-primary"
+
+struct _GtkWidget *e_error_new(struct _GtkWindow *parent, const char *tag, const char *arg0, ...);
+struct _GtkWidget *e_error_newv(struct _GtkWindow *parent, const char *tag, const char *arg0, va_list ap);
+
+int e_error_run(struct _GtkWindow *parent, const char *tag, const char *arg0, ...);
+int e_error_runv(struct _GtkWindow *parent, const char *tag, const char *arg0, va_list ap);
+
+#endif /* !_E_ERROR_H */