[evolution/wip-webkit2: 4/11] Introduce e-dom-utils with all functions that are accessing DOM.
- From: Tomas Popela <tpopela src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [evolution/wip-webkit2: 4/11] Introduce e-dom-utils with all functions that are accessing DOM.
- Date: Fri, 18 Oct 2013 06:31:27 +0000 (UTC)
commit ef19eb114b9e4dd4317e637c6fdacc74cce858ed
Author: Tomas Popela <tpopela redhat com>
Date: Fri Oct 18 08:06:00 2013 +0200
Introduce e-dom-utils with all functions that are accessing DOM.
e-util/Makefile.am | 2 +
e-util/e-dom-utils.c | 471 ++++++++++++++++++++++++++++++++++++++++++++++++++
e-util/e-dom-utils.h | 61 +++++++
3 files changed, 534 insertions(+), 0 deletions(-)
---
diff --git a/e-util/Makefile.am b/e-util/Makefile.am
index f1fb677..ab874f4 100644
--- a/e-util/Makefile.am
+++ b/e-util/Makefile.am
@@ -170,6 +170,7 @@ evolution_util_include_HEADERS = \
e-destination-store.h \
e-dialog-utils.h \
e-dialog-widgets.h \
+ e-dom-utils.h \
e-event.h \
e-file-request.h \
e-file-utils.h \
@@ -408,6 +409,7 @@ libevolution_util_la_SOURCES = \
e-destination-store.c \
e-dialog-utils.c \
e-dialog-widgets.c \
+ e-dom-utils.c \
e-event.c \
e-file-request.c \
e-file-utils.c \
diff --git a/e-util/e-dom-utils.c b/e-util/e-dom-utils.c
new file mode 100644
index 0000000..3a3e293
--- /dev/null
+++ b/e-util/e-dom-utils.c
@@ -0,0 +1,471 @@
+/*
+ * e-dom-utils.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/>
+ *
+ */
+
+#include "e-dom-utils.h"
+
+#include <config.h>
+
+static void
+replace_local_image_links (WebKitDOMElement *element)
+{
+ WebKitDOMElement *child;
+
+ if (element == NULL)
+ return;
+
+ if (WEBKIT_DOM_IS_HTML_IMAGE_ELEMENT (element)) {
+ WebKitDOMHTMLImageElement *img;
+ gchar *src;
+
+ img = WEBKIT_DOM_HTML_IMAGE_ELEMENT (element);
+ src = webkit_dom_html_image_element_get_src (img);
+ if (src && g_ascii_strncasecmp (src, "file://", 7) == 0) {
+ gchar *new_src;
+
+ /* this forms "evo-file://", which can be loaded,
+ * while "file://" cannot be, due to webkit policy */
+ new_src = g_strconcat ("evo-", src, NULL);
+ webkit_dom_html_image_element_set_src (img, new_src);
+ g_free (new_src);
+ }
+
+ g_free (src);
+ }
+
+ if (WEBKIT_DOM_IS_HTML_IFRAME_ELEMENT (element)) {
+ WebKitDOMDocument *frame_document;
+
+ frame_document =
+ webkit_dom_html_iframe_element_get_content_document (
+ WEBKIT_DOM_HTML_IFRAME_ELEMENT (element));
+ replace_local_image_links (WEBKIT_DOM_ELEMENT (frame_document));
+ }
+
+ child = webkit_dom_element_get_first_element_child (element);
+ replace_local_image_links (child);
+
+ do {
+ element = webkit_dom_element_get_next_element_sibling (element);
+ replace_local_image_links (element);
+ } while (element != NULL);
+}
+
+void
+e_dom_utils_replace_local_image_links (WebKitDOMDocument *document)
+{
+ WebKitDOMNode *node;
+
+ for (node = webkit_dom_node_get_first_child (WEBKIT_DOM_NODE (document));
+ node;
+ node = webkit_dom_node_get_next_sibling (node)) {
+ if (WEBKIT_DOM_IS_ELEMENT (node))
+ replace_local_image_links (WEBKIT_DOM_ELEMENT (node));
+ }
+}
+
+static gboolean
+document_has_selection (WebKitDOMDocument *document)
+{
+ WebKitDOMDOMWindow *dom_window;
+ WebKitDOMDOMSelection *dom_selection;
+
+ dom_window = webkit_dom_document_get_default_view (document);
+ if (!dom_window)
+ return FALSE;
+
+ dom_selection = webkit_dom_dom_window_get_selection (dom_window);
+ if (!WEBKIT_DOM_IS_DOM_SELECTION (dom_selection)
+ return FALSE;
+
+ if (webkit_dom_dom_selection_get_range_count (dom_selection) == 0)
+ return FALSE;
+
+ if (webkit_dom_dom_selection_get_is_collapsed (dom_selection))
+ return FALSE;
+
+ return TRUE;
+}
+
+gchar *
+e_dom_utils_get_document_content_html (WebKitDOMDocument *document)
+{
+ WebKitDOMElement *element;
+
+ element = webkit_dom_document_get_document_element (document);
+
+ return webkit_dom_html_element_get_outer_html (WEBKIT_DOM_HTML_ELEMENT (element));
+}
+
+static gchar *
+get_frame_selection_html (WebKitDOMElement *iframe)
+{
+ WebKitDOMDocument *document;
+ WebKitDOMDOMWindow *window;
+ WebKitDOMDOMSelection *selection;
+ WebKitDOMNodeList *frames;
+ gulong ii, length;
+
+ document = webkit_dom_html_iframe_element_get_content_document (
+ WEBKIT_DOM_HTML_IFRAME_ELEMENT (iframe));
+ window = webkit_dom_document_get_default_view (document);
+ selection = webkit_dom_dom_window_get_selection (window);
+ if (selection && (webkit_dom_dom_selection_get_range_count (selection) > 0)) {
+ WebKitDOMRange *range;
+ WebKitDOMElement *element;
+ WebKitDOMDocumentFragment *fragment;
+
+ range = webkit_dom_dom_selection_get_range_at (selection, 0, NULL);
+ if (range != NULL) {
+ fragment = webkit_dom_range_clone_contents (
+ range, NULL);
+
+ element = webkit_dom_document_create_element (
+ document, "DIV", NULL);
+ webkit_dom_node_append_child (
+ WEBKIT_DOM_NODE (element),
+ WEBKIT_DOM_NODE (fragment), NULL);
+
+ return webkit_dom_html_element_get_inner_html (
+ WEBKIT_DOM_HTML_ELEMENT (element));
+ }
+ }
+
+ frames = webkit_dom_document_get_elements_by_tag_name (
+ document, "IFRAME");
+ length = webkit_dom_node_list_get_length (frames);
+ for (ii = 0; ii < length; ii++) {
+ WebKitDOMNode *node;
+ gchar *text;
+
+ node = webkit_dom_node_list_item (frames, ii);
+
+ text = get_frame_selection_html (
+ WEBKIT_DOM_ELEMENT (node));
+
+ if (text != NULL)
+ return text;
+ }
+
+ return NULL;
+}
+
+gchar *
+e_dom_utils_get_selection_content_html (WebKitDOMDocument *document)
+{
+ WebKitDOMNodeList *frames;
+ gulong ii, length;
+
+ frames = webkit_dom_document_get_elements_by_tag_name (document, "IFRAME");
+ length = webkit_dom_node_list_get_length (frames);
+
+ for (ii = 0; ii < length; ii++) {
+ gchar *text;
+ WebKitDOMNode *node;
+
+ node = webkit_dom_node_list_item (frames, ii);
+
+ text = get_frame_selection_html (
+ WEBKIT_DOM_ELEMENT (node));
+
+ if (text != NULL)
+ return text;
+ }
+
+ return NULL;
+}
+
+static gchar *
+get_frame_selection_content_text (WebKitDOMElement *iframe)
+{
+ WebKitDOMDocument *document;
+ WebKitDOMDOMWindow *window;
+ WebKitDOMDOMSelection *selection;
+ WebKitDOMNodeList *frames;
+ gulong ii, length;
+
+ document = webkit_dom_html_iframe_element_get_content_document (
+ WEBKIT_DOM_HTML_IFRAME_ELEMENT (iframe));
+ window = webkit_dom_document_get_default_view (document);
+ selection = webkit_dom_dom_window_get_selection (window);
+ if (selection && (webkit_dom_dom_selection_get_range_count (selection) > 0)) {
+ WebKitDOMRange *range;
+
+ range = webkit_dom_dom_selection_get_range_at (selection, 0, NULL);
+ if (range != NULL)
+ return webkit_dom_range_to_string (range, NULL);
+ }
+
+ frames = webkit_dom_document_get_elements_by_tag_name (
+ document, "IFRAME");
+ length = webkit_dom_node_list_get_length (frames);
+ for (ii = 0; ii < length; ii++) {
+ WebKitDOMNode *node;
+ gchar *text;
+
+ node = webkit_dom_node_list_item (frames, ii);
+
+ text = get_frame_selection_content_text (
+ WEBKIT_DOM_ELEMENT (node));
+
+ if (text != NULL)
+ return text;
+ }
+
+ return NULL;
+}
+
+gchar *
+e_dom_utils_get_selection_content_text (WebKitDOMDocument *document)
+{
+ WebKitDOMNodeList *frames;
+ gulong ii, length;
+
+ frames = webkit_dom_document_get_elements_by_tag_name (document, "IFRAME");
+ length = webkit_dom_node_list_get_length (frames);
+
+ for (ii = 0; ii < length; ii++) {
+ gchar *text;
+ WebKitDOMNode *node;
+
+ node = webkit_dom_node_list_item (frames, ii);
+
+ text = get_frame_selection_content_text (
+ WEBKIT_DOM_ELEMENT (node));
+
+ if (text != NULL)
+ return text;
+ }
+
+ return NULL;
+}
+
+void
+e_dom_utils_create_and_add_css_style_sheet (WebKitDOMDocument *document,
+ const gchar *style_sheet_id)
+{
+ WebKitDOMElement *style_element;
+
+ style_element = webkit_dom_document_get_element_by_id (document, style_sheet_id);
+
+ if (!style_element) {
+ /* Create new <style> element */
+ style_element = webkit_dom_document_create_element (document, "style", NULL);
+ webkit_dom_html_element_set_id (
+ WEBKIT_DOM_HTML_ELEMENT (style_element),
+ style_sheet_id);
+ webkit_dom_html_style_element_set_media (
+ WEBKIT_DOM_HTML_STYLE_ELEMENT (style_element),
+ "screen");
+ webkit_dom_node_append_child (
+ WEBKIT_DOM_NODE (style_element),
+ /* WebKit hack - we have to insert empty TextNode into style element */
+ WEBKIT_DOM_NODE (webkit_dom_document_create_text_node (document, "")),
+ NULL);
+
+ webkit_dom_node_append_child (
+ WEBKIT_DOM_NODE (webkit_dom_document_get_head (document)),
+ WEBKIT_DOM_NODE (style_element),
+ NULL);
+ }
+}
+
+static void
+add_css_rule_into_style_sheet (WebKitDOMDocument *document,
+ const gchar *style_sheet_id,
+ const gchar *selector,
+ const gchar *style)
+{
+ WebKitDOMElement *style_element;
+ WebKitDOMStyleSheet *sheet;
+ WebKitDOMCSSRuleList *rules_list;
+ gint length, ii;
+
+ style_element = webkit_dom_document_get_element_by_id (document, style_sheet_id);
+
+ if (!style_element) {
+ e_dom_utils_create_and_add_css_style_sheet (document, style_sheet_id);
+ style_element = webkit_dom_document_get_element_by_id (document, style_sheet_id);
+ }
+
+ /* Get sheet that is associated with style element */
+ sheet = webkit_dom_html_style_element_get_sheet (WEBKIT_DOM_HTML_STYLE_ELEMENT (style_element));
+
+ rules_list = webkit_dom_css_style_sheet_get_css_rules (WEBKIT_DOM_CSS_STYLE_SHEET (sheet));
+ length = webkit_dom_css_rule_list_get_length (rules_list);
+
+ /* Check if rule exists */
+ for (ii = 0; ii < length; ii++) {
+ WebKitDOMCSSRule *rule;
+ gchar *rule_text;
+ gchar *rule_selector, *selector_end;
+
+ rule = webkit_dom_css_rule_list_item (rules_list, ii);
+
+ if (!WEBKIT_DOM_IS_CSS_RULE (rule))
+ continue;
+
+ rule_text = webkit_dom_css_rule_get_css_text (rule);
+
+ /* Find the start of the style => end of the selector */
+ selector_end = g_strstr_len (rule_text, -1, " {");
+ if (!selector_end) {
+ g_free (rule_text);
+ continue;
+ }
+
+ rule_selector =
+ g_utf8_substring (
+ rule_text,
+ 0,
+ g_utf8_pointer_to_offset (rule_text, selector_end));
+
+ if (g_strcmp0 (rule_selector, selector) == 0) {
+ /* If exists remove it */
+ webkit_dom_css_style_sheet_remove_rule (
+ WEBKIT_DOM_CSS_STYLE_SHEET (sheet),
+ ii, NULL);
+ }
+
+ g_free (rule_selector);
+ g_free (rule_text);
+ }
+
+ /* Insert the rule at the end, so it will override previously inserted */
+ webkit_dom_css_style_sheet_add_rule (
+ WEBKIT_DOM_CSS_STYLE_SHEET (sheet),
+ selector,
+ style,
+ webkit_dom_css_rule_list_get_length (
+ webkit_dom_css_style_sheet_get_css_rules (
+ WEBKIT_DOM_CSS_STYLE_SHEET (sheet))), /* Index */
+ NULL);
+}
+
+static void
+add_css_rule_into_style_sheet_recursive (WebKitDOMDocument *document,
+ const gchar *style_sheet_id,
+ const gchar *selector,
+ const gchar *style)
+{
+ WebKitDOMNodeList *frames;
+ gint ii, length;
+
+ /* Add rule to document */
+ add_css_rule_into_style_sheet (
+ document,
+ style_sheet_id,
+ selector,
+ style);
+
+ frames = webkit_dom_document_query_selector_all (document, "iframe", NULL);
+ length = webkit_dom_node_list_get_length (frames);
+
+ /* Add rules to every sub document */
+ for (ii = 0; ii < length; ii++) {
+ WebKitDOMDocument *iframe_document;
+ WebKitDOMNode *node;
+
+ node = webkit_dom_node_list_item (frames, ii);
+ iframe_document = webkit_dom_html_iframe_element_get_content_document (
+ WEBKIT_DOM_HTML_IFRAME_ELEMENT (node));
+
+ add_css_rule_into_style_sheet_recursive (
+ iframe_document,
+ style_sheet_id,
+ selector,
+ style);
+ }
+}
+
+void
+e_dom_utils_add_css_rule_into_style_sheet (WebKitDOMDocument *document,
+ const gchar *style_sheet_id,
+ const gchar *selector,
+ const gchar *style)
+{
+ g_return_if_fail (style_sheet_id && *style_sheet_id);
+ g_return_if_fail (selector && *selector);
+ g_return_if_fail (style && *style);
+
+ add_css_rule_into_style_sheet_recursive (
+ document,
+ style_sheet_id,
+ selector,
+ style);
+}
+
+static void
+collapse_contacts_list (WebKitDOMEventTarget *event_target,
+ WebKitDOMEvent *event,
+ gpointer user_data)
+{
+ WebKitDOMDocument *document;
+ WebKitDOMElement *list;
+ gchar *id, *list_id;
+ gchar *imagesdir, *src;
+ gboolean hidden;
+
+ document = user_data;
+ id = webkit_dom_html_element_get_id (WEBKIT_DOM_HTML_ELEMENT (event_target));
+
+ list_id = g_strconcat ("list-", id, NULL);
+ list = webkit_dom_document_get_element_by_id (document, list_id);
+ g_free (id);
+ g_free (list_id);
+
+ if (list == NULL)
+ return;
+
+ imagesdir = g_filename_to_uri (EVOLUTION_IMAGESDIR, NULL, NULL);
+ hidden = webkit_dom_html_element_get_hidden (WEBKIT_DOM_HTML_ELEMENT (list));
+
+ if (hidden)
+ src = g_strdup_printf ("evo-file://%s/minus.png", imagesdir);
+ else
+ src = g_strdup_printf ("evo-file://%s/plus.png", imagesdir);
+
+ webkit_dom_html_element_set_hidden (
+ WEBKIT_DOM_HTML_ELEMENT (list), !hidden);
+ webkit_dom_html_image_element_set_src (
+ WEBKIT_DOM_HTML_IMAGE_ELEMENT (event_target), src);
+
+ g_free (src);
+ g_free (imagesdir);
+}
+
+void
+e_dom_utils_eab_contact_formatter_bind_dom (WebKitDOMDocument *document)
+{
+ WebKitDOMNodeList *nodes;
+ gulong ii, length;
+
+ nodes = webkit_dom_document_get_elements_by_class_name (
+ document, "_evo_collapse_button");
+
+ length = webkit_dom_node_list_get_length (nodes);
+ for (ii = 0; ii < length; ii++) {
+
+ WebKitDOMNode *node;
+
+ node = webkit_dom_node_list_item (nodes, ii);
+ webkit_dom_event_target_add_event_listener (
+ WEBKIT_DOM_EVENT_TARGET (node), "click",
+ G_CALLBACK (collapse_contacts_list), FALSE, document);
+ }
+}
+
diff --git a/e-util/e-dom-utils.h b/e-util/e-dom-utils.h
new file mode 100644
index 0000000..0936c94
--- /dev/null
+++ b/e-util/e-dom-utils.h
@@ -0,0 +1,61 @@
+/*
+ * e-dom-utils.h
+ *
+ * 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/>
+ *
+ */
+
+/* This is intended to serve as a common base class for all HTML viewing
+ * needs in Evolution. Currently based on GtkHTML, the idea is to wrap
+ * the GtkHTML API enough that we no longer have to make direct calls to
+ * it. This should help smooth the transition to WebKit/GTK+.
+ *
+ * This class handles basic tasks like mouse hovers over links, clicked
+ * links, and servicing URI requests asynchronously via GIO. */
+
+#if !defined (__E_UTIL_H_INSIDE__) && !defined (LIBEUTIL_COMPILATION)
+#error "Only <e-util/e-util.h> should be included directly."
+#endif
+
+#ifndef E_DOM_UTILS_H
+#define E_DOM_UTILS_H
+
+#include <webkitdom/webkitdom.h>
+
+#include <gtk/gtk.h>
+
+G_BEGIN_DECLS
+
+void e_dom_utils_replace_local_image_links
+ (WebKitDOMDocument *document);
+gchar * e_dom_utils_get_document_content_html
+ (WebKitDOMDocument *document);
+gchar * e_dom_utils_get_selection_content_html
+ (WebKitDOMDocument *document);
+gchar * e_dom_utils_get_selection_content_text
+ (WebKitDOMDocument *document);
+void e_dom_utils_create_and_add_css_style_sheet
+ (WebKitDOMDocument *document,
+ const gchar *style_sheet_id);
+void e_dom_utils_add_css_rule_into_style_sheet
+ (WebKitDOMDocument *document,
+ const gchar *style_sheet_id,
+ const gchar *selector,
+ const gchar *style);
+void e_dom_utils_eab_contact_formatter_bind_dom
+ (WebKitDOMDocument *document);
+
+G_END_DECLS
+
+#endif /* E_DOM_UTILS_H */
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