Bug #499320 - Preview before import from command line

1 files changed, 481 insertions, 0 deletions

diff --git a/widgets/misc/e-web-view-preview.c b/widgets/misc/e-web-view-preview.c
new file mode 100644
index 0000000000..e268779827
--- /dev/null
+++ b/widgets/misc/e-web-view-preview.c
@@ -0,0 +1,481 @@
+/*
+ * e-web-view-preview.c
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) version 3.
+ *
+ * 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with the program; if not, see <http://www.gnu.org/licenses/>
+ *
+ *
+ * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
+ *
+ */
+
+#include "e-web-view-preview.h"
+
+#include <config.h>
+#include <string.h>
+#include <glib/gi18n-lib.h>
+
+#define E_WEB_VIEW_PREVIEW_GET_PRIVATE(obj) \
+	(G_TYPE_INSTANCE_GET_PRIVATE \
+	((obj), E_TYPE_WEB_VIEW_PREVIEW, EWebViewPreviewPrivate))
+
+struct _EWebViewPreviewPrivate {
+	gboolean escape_values;
+	GString *updating_content; /* is NULL when not between begin_update/end_update */
+};
+
+enum {
+	PROP_0,
+	PROP_TREE_VIEW,
+	PROP_PREVIEW_WIDGET,
+	PROP_ESCAPE_VALUES
+};
+
+G_DEFINE_TYPE (EWebViewPreview, e_web_view_preview, GTK_TYPE_VPANED);
+
+static void
+web_view_preview_set_property (GObject *object,
+                       guint property_id,
+                       const GValue *value,
+                       GParamSpec *pspec)
+{
+	switch (property_id) {
+		case PROP_ESCAPE_VALUES:
+			e_web_view_preview_set_escape_values (
+				E_WEB_VIEW_PREVIEW (object),
+				g_value_get_boolean (value));
+			return;
+	}
+
+	G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+}
+
+static void
+web_view_preview_get_property (GObject *object,
+                       guint property_id,
+                       GValue *value,
+                       GParamSpec *pspec)
+{
+	switch (property_id) {
+		case PROP_TREE_VIEW:
+			g_value_set_object (
+				value, e_web_view_preview_get_tree_view (
+				E_WEB_VIEW_PREVIEW (object)));
+			return;
+
+		case PROP_PREVIEW_WIDGET:
+			g_value_set_object (
+				value, e_web_view_preview_get_preview (
+				E_WEB_VIEW_PREVIEW (object)));
+			return;
+
+		case PROP_ESCAPE_VALUES:
+			g_value_set_boolean (
+				value, e_web_view_preview_get_escape_values (
+				E_WEB_VIEW_PREVIEW (object)));
+			return;
+	}
+
+	G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+}
+
+static void
+web_view_preview_dispose (GObject *object)
+{
+	EWebViewPreviewPrivate *priv;
+
+	priv = E_WEB_VIEW_PREVIEW_GET_PRIVATE (object);
+
+	if (priv->updating_content != NULL) {
+		g_string_free (priv->updating_content, TRUE);
+		priv->updating_content = NULL;
+	}
+
+	/* Chain up to parent's dispose() method. */
+	G_OBJECT_CLASS (e_web_view_preview_parent_class)->dispose (object);
+}
+
+static void
+e_web_view_preview_class_init (EWebViewPreviewClass *klass)
+{
+	GObjectClass *object_class;
+
+	g_type_class_add_private (klass, sizeof (EWebViewPreviewPrivate));
+
+	object_class = G_OBJECT_CLASS (klass);
+	object_class->set_property = web_view_preview_set_property;
+	object_class->get_property = web_view_preview_get_property;
+	object_class->dispose = web_view_preview_dispose;
+
+	g_object_class_install_property (
+		object_class,
+		PROP_TREE_VIEW,
+		g_param_spec_object (
+			"tree-view",
+			"Tree View",
+			NULL,
+			GTK_TYPE_TREE_VIEW,
+			G_PARAM_READABLE));
+
+	g_object_class_install_property (
+		object_class,
+		PROP_PREVIEW_WIDGET,
+		g_param_spec_object (
+			"preview-widget",
+			"Preview Widget",
+			NULL,
+			GTK_TYPE_WIDGET,
+			G_PARAM_READABLE));
+
+	g_object_class_install_property (
+		object_class,
+		PROP_ESCAPE_VALUES,
+		g_param_spec_boolean (
+			"escape-values",
+			"Whether escaping values automatically, when inserting",
+			NULL,
+			TRUE,
+			G_PARAM_READWRITE));
+}
+
+static GtkWidget *
+in_scrolled_window (GtkWidget *widget)
+{
+	GtkWidget *sw;
+
+	g_return_val_if_fail (widget != NULL, NULL);
+
+	sw = gtk_scrolled_window_new (NULL, NULL);
+	gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
+	gtk_container_add (GTK_CONTAINER (sw), widget);
+
+	gtk_widget_show (widget);
+	gtk_widget_show (sw);
+
+	return sw;
+}
+
+static void
+e_web_view_preview_init (EWebViewPreview *preview)
+{
+	GtkWidget *tree_view_sw, *web_view_sw;
+	EWebViewPreviewPrivate *priv;
+
+	priv = E_WEB_VIEW_PREVIEW_GET_PRIVATE (preview);
+	preview->priv = priv;
+	priv->escape_values = TRUE;
+
+	tree_view_sw = in_scrolled_window (gtk_tree_view_new ());
+	web_view_sw = in_scrolled_window (e_web_view_new ());
+
+	gtk_widget_hide (tree_view_sw);
+	gtk_widget_show (web_view_sw);
+
+	gtk_paned_pack1 (GTK_PANED (preview), tree_view_sw, FALSE, TRUE);
+	gtk_paned_pack2 (GTK_PANED (preview), web_view_sw, TRUE, TRUE);
+
+	/* rawly 3 lines of a text plus a little bit more */
+	if (gtk_paned_get_position (GTK_PANED (preview)) < 85)
+		gtk_paned_set_position (GTK_PANED (preview), 85);
+}
+
+GtkWidget *
+e_web_view_preview_new (void)
+{
+	return g_object_new (E_TYPE_WEB_VIEW_PREVIEW, NULL);
+}
+
+GtkTreeView *
+e_web_view_preview_get_tree_view (EWebViewPreview *preview)
+{
+	g_return_val_if_fail (preview != NULL, NULL);
+	g_return_val_if_fail (E_IS_WEB_VIEW_PREVIEW (preview), NULL);
+
+	return GTK_TREE_VIEW (gtk_bin_get_child (GTK_BIN (gtk_paned_get_child1 (GTK_PANED (preview)))));
+}
+
+GtkWidget *
+e_web_view_preview_get_preview	(EWebViewPreview *preview)
+{
+	g_return_val_if_fail (preview != NULL, NULL);
+	g_return_val_if_fail (E_IS_WEB_VIEW_PREVIEW (preview), NULL);
+
+	return gtk_bin_get_child (GTK_BIN (gtk_paned_get_child2 (GTK_PANED (preview))));
+}
+
+void
+e_web_view_preview_set_preview	(EWebViewPreview *preview, GtkWidget *preview_widget)
+{
+	GtkWidget *old_child;
+
+	g_return_if_fail (preview != NULL);
+	g_return_if_fail (E_IS_WEB_VIEW_PREVIEW (preview));
+	g_return_if_fail (preview_widget != NULL);
+	g_return_if_fail (GTK_IS_WIDGET (preview_widget));
+
+	old_child = gtk_bin_get_child (GTK_BIN (gtk_paned_get_child2 (GTK_PANED (preview))));
+	if (old_child) {
+		g_return_if_fail (old_child != preview_widget);
+		gtk_widget_destroy (old_child);
+	}
+
+	gtk_container_add (GTK_CONTAINER (gtk_paned_get_child2 (GTK_PANED (preview))), preview_widget);
+}
+
+void
+e_web_view_preview_show_tree_view (EWebViewPreview *preview)
+{
+	g_return_if_fail (preview != NULL);
+	g_return_if_fail (E_IS_WEB_VIEW_PREVIEW (preview));
+
+	gtk_widget_show (gtk_paned_get_child1 (GTK_PANED (preview)));
+}
+
+void
+e_web_view_preview_hide_tree_view(EWebViewPreview *preview)
+{
+	g_return_if_fail (preview != NULL);
+	g_return_if_fail (E_IS_WEB_VIEW_PREVIEW (preview));
+
+	gtk_widget_hide (gtk_paned_get_child1 (GTK_PANED (preview)));
+}
+
+void
+e_web_view_preview_set_escape_values (EWebViewPreview *preview, gboolean escape)
+{
+	g_return_if_fail (preview != NULL);
+	g_return_if_fail (E_IS_WEB_VIEW_PREVIEW (preview));
+	g_return_if_fail (preview->priv != NULL);
+
+	preview->priv->escape_values = escape;
+}
+
+gboolean
+e_web_view_preview_get_escape_values (EWebViewPreview *preview)
+{
+	g_return_val_if_fail (preview != NULL, FALSE);
+	g_return_val_if_fail (E_IS_WEB_VIEW_PREVIEW (preview), FALSE);
+	g_return_val_if_fail (preview->priv != NULL, FALSE);
+
+	return preview->priv->escape_values;
+}
+
+void
+e_web_view_preview_begin_update (EWebViewPreview *preview)
+{
+	g_return_if_fail (preview != NULL);
+	g_return_if_fail (E_IS_WEB_VIEW_PREVIEW (preview));
+	g_return_if_fail (preview->priv != NULL);
+
+	if (preview->priv->updating_content) {
+		g_warning ("%s: Previous content update isn't finished with e_web_view_preview_end_update()", G_STRFUNC);
+		g_string_free (preview->priv->updating_content, TRUE);
+	}
+
+	preview->priv->updating_content = g_string_new ("<TABLE width=\"100%\" border=\"0\" cols=\"2\">");
+}
+
+void
+e_web_view_preview_end_update (EWebViewPreview *preview)
+{
+	GtkWidget *web_view;
+
+	g_return_if_fail (preview != NULL);
+	g_return_if_fail (E_IS_WEB_VIEW_PREVIEW (preview));
+	g_return_if_fail (preview->priv != NULL);
+	g_return_if_fail (preview->priv->updating_content != NULL);
+
+	g_string_append (preview->priv->updating_content, "</TABLE>");
+
+	web_view = e_web_view_preview_get_preview (preview);
+	if (E_IS_WEB_VIEW (web_view))
+		e_web_view_load_string (E_WEB_VIEW (web_view), preview->priv->updating_content->str);
+
+	g_string_free (preview->priv->updating_content, TRUE);
+	preview->priv->updating_content = NULL;
+}
+
+static gchar *
+replace_string (const gchar *text, const gchar *find, const gchar *replace)
+{
+	const gchar *p, *next;
+	GString *str;
+	gint find_len;
+
+	g_return_val_if_fail (text != NULL, NULL);
+	g_return_val_if_fail (find != NULL, NULL);
+	g_return_val_if_fail (*find, NULL);
+
+	find_len = strlen (find);
+	str = g_string_new ("");
+
+	p = text;
+	while (next = strstr (p, find), next) {
+		if (p + 1 < next)
+			g_string_append_len (str, p, next - p);
+
+		if (replace && *replace)
+			g_string_append (str, replace);
+
+		p = next + find_len;
+	}
+
+	g_string_append (str, p);
+
+	return g_string_free (str, FALSE);
+}
+
+static gchar *
+web_view_preview_escape_text (EWebViewPreview *preview, const gchar *text)
+{
+	gchar *utf8_valid, *res, *end;
+
+	if (!e_web_view_preview_get_escape_values (preview))
+		return NULL;
+
+	g_return_val_if_fail (text != NULL, NULL);
+
+	if (g_utf8_validate (text, -1, NULL)) {
+		res = g_markup_escape_text (text, -1);
+	} else {
+		utf8_valid = g_strdup (text);
+		while (end = NULL, !g_utf8_validate (utf8_valid, -1, (const gchar **) &end) && end && *end)
+			*end = '?';
+
+		res = g_markup_escape_text (utf8_valid, -1);
+
+		g_free (utf8_valid);
+	}
+
+	if (res && strchr (res, '\n')) {
+		/* replace line breaks with <BR> */
+		if (strchr (res, '\r')) {
+			end = replace_string (res, "\r", "");
+			g_free (res);
+			res = end;
+		}
+
+		end = replace_string (res, "\n", "<BR>");
+		g_free (res);
+		res = end;
+	}
+
+	return res;
+}
+
+void
+e_web_view_preview_add_header (EWebViewPreview *preview, gint index, const gchar *header)
+{
+	gchar *escaped;
+
+	g_return_if_fail (preview != NULL);
+	g_return_if_fail (E_IS_WEB_VIEW_PREVIEW (preview));
+	g_return_if_fail (preview->priv != NULL);
+	g_return_if_fail (preview->priv->updating_content != NULL);
+	g_return_if_fail (header != NULL);
+
+	if (index < 1)
+		index = 1;
+	else if (index > 6)
+		index = 6;
+
+	escaped = web_view_preview_escape_text (preview, header);
+	if (escaped)
+		header = escaped;
+
+	g_string_append_printf (preview->priv->updating_content, "<TR><TD colspan=2><H%d>%s</H%d></TD></TR>", index, header, index);
+
+	g_free (escaped);
+}
+
+void
+e_web_view_preview_add_text (EWebViewPreview *preview, const gchar *text)
+{
+	gchar *escaped;
+
+	g_return_if_fail (preview != NULL);
+	g_return_if_fail (E_IS_WEB_VIEW_PREVIEW (preview));
+	g_return_if_fail (preview->priv != NULL);
+	g_return_if_fail (preview->priv->updating_content != NULL);
+	g_return_if_fail (text != NULL);
+
+	escaped = web_view_preview_escape_text (preview, text);
+	if (escaped)
+		text = escaped;
+
+	g_string_append_printf (preview->priv->updating_content, "<TR><TD colspan=2><FONT size=\"3\">%s</FONT></TD></TR>", text);
+
+	g_free (escaped);
+}
+
+void
+e_web_view_preview_add_raw_html (EWebViewPreview *preview, const gchar *raw_html)
+{
+	g_return_if_fail (preview != NULL);
+	g_return_if_fail (E_IS_WEB_VIEW_PREVIEW (preview));
+	g_return_if_fail (preview->priv != NULL);
+	g_return_if_fail (preview->priv->updating_content != NULL);
+	g_return_if_fail (raw_html != NULL);
+
+	g_string_append_printf (preview->priv->updating_content, "<TR><TD colspan=2>%s</TD></TR>", raw_html);
+}
+
+void
+e_web_view_preview_add_separator (EWebViewPreview *preview)
+{
+	g_return_if_fail (preview != NULL);
+	g_return_if_fail (E_IS_WEB_VIEW_PREVIEW (preview));
+	g_return_if_fail (preview->priv != NULL);
+	g_return_if_fail (preview->priv->updating_content != NULL);
+
+	g_string_append (preview->priv->updating_content, "<TR><TD colspan=2><HR></TD></TR>");
+}
+
+void
+e_web_view_preview_add_empty_line (EWebViewPreview *preview)
+{
+	g_return_if_fail (preview != NULL);
+	g_return_if_fail (E_IS_WEB_VIEW_PREVIEW (preview));
+	g_return_if_fail (preview->priv != NULL);
+	g_return_if_fail (preview->priv->updating_content != NULL);
+
+	g_string_append (preview->priv->updating_content, "<TR><TD colspan=2>&nbsp;</TD></TR>");
+}
+
+/* section can be NULL, but value cannot */
+void
+e_web_view_preview_add_section (EWebViewPreview *preview, const gchar *section, const gchar *value)
+{
+	gchar *escaped_section = NULL, *escaped_value;
+
+	g_return_if_fail (preview != NULL);
+	g_return_if_fail (E_IS_WEB_VIEW_PREVIEW (preview));
+	g_return_if_fail (preview->priv != NULL);
+	g_return_if_fail (preview->priv->updating_content != NULL);
+	g_return_if_fail (value != NULL);
+
+	if (section) {
+		escaped_section = web_view_preview_escape_text (preview, section);
+		if (escaped_section)
+			section = escaped_section;
+	}
+
+	escaped_value = web_view_preview_escape_text (preview, value);
+	if (escaped_value)
+		value = escaped_value;
+
+	g_string_append_printf (preview->priv->updating_content, "<TR><TD width=\"10%%\" valign=\"top\" nowrap><FONT size=\"3\"><B>%s</B></FONT></TD><TD width=\"90%%\"><FONT size=\"3\">%s</FONT></TD></TR>", section ? section : "", value);
+
+	g_free (escaped_section);
+	g_free (escaped_value);
+}