[epiphany/pgriffis/web-extension/tabs: 5/7] WebExtensions: Implement tabs.getZoom() and tabs.setZoom()

[Patrick Griffis <pgriffis src gnome org>]

commit 565ba0b69ce13a0eda0dd1f361d8cdbe0ad9b975
Author: Patrick Griffis <pgriffis igalia com>
Date:   Thu Jun 2 17:30:53 2022 -0500

    WebExtensions: Implement tabs.getZoom() and tabs.setZoom()

 .../resources/js/webextensions.js                  |  2 +
 src/webextension/api/tabs.c                        | 79 +++++++++++++++++++++-
 2 files changed, 80 insertions(+), 1 deletion(-)
---
diff --git a/embed/web-process-extension/resources/js/webextensions.js 
b/embed/web-process-extension/resources/js/webextensions.js
index 8694656f6..952993ad6 100644
--- a/embed/web-process-extension/resources/js/webextensions.js
+++ b/embed/web-process-extension/resources/js/webextensions.js
@@ -26,6 +26,8 @@ window.browser.tabs = {
     remove: function (...args) { return ephy_message ('tabs.remove', args); },
     removeCSS: function (...args) { return ephy_message ('tabs.removeCSS', args); },
     sendMessage: function (...args) { return ephy_message ('tabs.sendMessage', args); },
+    getZoom: function (...args) { return ephy_message ('tabs.getZoom', args); },
+    setZoom: function (...args) { return ephy_message ('tabs.setZoom', args); },
     onActivated: new EphyEventListener (),
     onAttached: new EphyEventListener (),
     onCreated: new EphyEventListener (),
diff --git a/src/webextension/api/tabs.c b/src/webextension/api/tabs.c
index eeb914417..a59d2d111 100644
--- a/src/webextension/api/tabs.c
+++ b/src/webextension/api/tabs.c
@@ -664,10 +664,85 @@ tabs_handler_remove (EphyWebExtension  *self,
   g_set_error_literal (error, WEB_EXTENSION_ERROR, WEB_EXTENSION_ERROR_INVALID_ARGUMENT, "tabs.remove(): 
First argument is not a number or array.");
   return NULL;
 }
-  g_set_error_literal (error, WEB_EXTENSION_ERROR, WEB_EXTENSION_ERROR_INVALID_ARGUMENT, "tabs.close(): 
First argument is not a number or array.");
+
+static char *
+tabs_handler_set_zoom (EphyWebExtension  *self,
+                       char              *name,
+                       JSCValue          *args,
+                       gint64             extension_page_id,
+                       GError           **error)
+{
+  EphyShell *shell = ephy_shell_get_default ();
+  g_autoptr (JSCValue) zoom_level_value = NULL;
+  g_autoptr (JSCValue) tab_id_value = NULL;
+  WebKitWebView *web_view;
+  int tab_id = -1;
+  double zoom_level;
+
+  /* First arg is optional tabId, second zoomFactor. */
+  zoom_level_value = jsc_value_object_get_property_at_index (args, 1);
+  if (jsc_value_is_undefined (zoom_level_value)) {
+    g_object_unref (zoom_level_value);
+    zoom_level_value = jsc_value_object_get_property_at_index (args, 0);
+  } else {
+    tab_id_value = jsc_value_object_get_property_at_index (args, 0);
+    tab_id = jsc_value_to_int32 (tab_id_value);
+  }
+
+  if (!jsc_value_is_number (zoom_level_value)) {
+    g_set_error_literal (error, WEB_EXTENSION_ERROR, WEB_EXTENSION_ERROR_INVALID_ARGUMENT, "tabs.setZoom(): 
Missing zoomFactor.");
+    return NULL;
+  }
+
+  zoom_level = jsc_value_to_double (zoom_level_value);
+  if (zoom_level < 0.3 || zoom_level > 5) {
+    g_set_error_literal (error, WEB_EXTENSION_ERROR, WEB_EXTENSION_ERROR_INVALID_ARGUMENT, "tabs.setZoom(): 
zoomFactor must be between 0.3 and 5.0.");
+    return NULL;
+  }
+
+  if (tab_id >= 0)
+    web_view = get_web_view_for_tab_id (shell, tab_id, NULL);
+  else
+    web_view = WEBKIT_WEB_VIEW (ephy_shell_get_active_web_view (shell));
+
+  if (!web_view) {
+    g_set_error (error, WEB_EXTENSION_ERROR, WEB_EXTENSION_ERROR_INVALID_ARGUMENT, "tabs.setZoom(): Failed 
to find tabId %d.", tab_id);
+    return NULL;
+  }
+
+  webkit_web_view_set_zoom_level (web_view, jsc_value_to_double (zoom_level_value));
   return NULL;
 }
 
+static char *
+tabs_handler_get_zoom (EphyWebExtension  *self,
+                       char              *name,
+                       JSCValue          *args,
+                       gint64             extension_page_id,
+                       GError           **error)
+{
+  EphyShell *shell = ephy_shell_get_default ();
+  g_autoptr (JSCValue) tab_id_value = NULL;
+  WebKitWebView *web_view;
+  int tab_id = -1;
+
+  tab_id_value = jsc_value_object_get_property_at_index (args, 0);
+  if (jsc_value_is_number (tab_id_value))
+    tab_id = jsc_value_to_int32 (tab_id_value);
+
+  if (tab_id >= 0)
+    web_view = get_web_view_for_tab_id (shell, tab_id, NULL);
+  else
+    web_view = WEBKIT_WEB_VIEW (ephy_shell_get_active_web_view (shell));
+
+  if (!web_view) {
+    g_set_error (error, WEB_EXTENSION_ERROR, WEB_EXTENSION_ERROR_INVALID_ARGUMENT, "tabs.getZoom(): Failed 
to find tabId %d.", tab_id);
+    return NULL;
+  }
+
+  return g_strdup_printf ("%f", webkit_web_view_get_zoom_level (web_view));
+}
+
 static EphyWebExtensionSyncApiHandler tabs_handlers[] = {
   {"create", tabs_handler_create},
   {"query", tabs_handler_query},
@@ -677,6 +752,8 @@ static EphyWebExtensionSyncApiHandler tabs_handlers[] = {
   {"get", tabs_handler_get},
   {"executeScript", tabs_handler_execute_script},
   {"sendMessage", tabs_handler_send_message},
+  {"getZoom", tabs_handler_get_zoom},
+  {"setZoom", tabs_handler_set_zoom},
 };
 
 void