[evolution/wip/mcrha/webkit-jsc-api] cherry-pick fix for "I#792 - Composer: Some shortcuts depend on the current keyboard layout ]["

[Milan Crha <mcrha src gnome org>]

commit 4a2f46adbd14e0996bfeceac69df7443368161dc
Author: Milan Crha <mcrha redhat com>
Date:   Fri Mar 6 13:29:43 2020 +0100

    cherry-pick fix for "I#792 - Composer: Some shortcuts depend on the current keyboard layout ]["

 src/e-util/e-html-editor-actions.c          |  2 +-
 src/modules/webkit-editor/e-webkit-editor.c | 71 ++++++++++++++++-------------
 2 files changed, 40 insertions(+), 33 deletions(-)
---
diff --git a/src/e-util/e-html-editor-actions.c b/src/e-util/e-html-editor-actions.c
index 56b885e886..a3d709e004 100644
--- a/src/e-util/e-html-editor-actions.c
+++ b/src/e-util/e-html-editor-actions.c
@@ -1063,7 +1063,7 @@ static GtkActionEntry core_entries[] = {
        { "paste",
          "edit-paste",
          N_("_Paste"),
-         NULL, /* Widgets are treating Ctrl + v shortcut themselves */
+         "<Control>v",
          N_("Paste text from the clipboard"),
          NULL }, /* Handled by focus tracker */
 
diff --git a/src/modules/webkit-editor/e-webkit-editor.c b/src/modules/webkit-editor/e-webkit-editor.c
index 753116e554..7b25e1fa84 100644
--- a/src/modules/webkit-editor/e-webkit-editor.c
+++ b/src/modules/webkit-editor/e-webkit-editor.c
@@ -5172,9 +5172,10 @@ static gboolean
 webkit_editor_key_press_event (GtkWidget *widget,
                                GdkEventKey *event)
 {
-       EWebKitEditor *wk_editor;
        GdkKeymapKey key = { 0, 0, 0 };
        guint keyval;
+       gboolean is_shift, is_ctrl;
+       gboolean is_webkit_keypress = FALSE;
 
        key.keycode = event->hardware_keycode;
 
@@ -5183,53 +5184,59 @@ webkit_editor_key_press_event (GtkWidget *widget,
        if (!keyval)
                keyval = event->keyval;
 
-       wk_editor = E_WEBKIT_EDITOR (widget);
+       is_shift = ((event)->state & GDK_SHIFT_MASK) != 0;
+       is_ctrl = ((event)->state & GDK_CONTROL_MASK) != 0;
 
-       if ((((event)->state & GDK_SHIFT_MASK) &&
-           (keyval == GDK_KEY_Insert)) ||
-           (((event)->state & GDK_CONTROL_MASK) &&
-           (keyval == GDK_KEY_v))) {
-               if (!e_content_editor_emit_paste_clipboard (E_CONTENT_EDITOR (widget)))
-                       webkit_editor_paste (E_CONTENT_EDITOR (widget));
-               return TRUE;
-       }
+       /* Copy */
+       if (is_ctrl && !is_shift && (keyval == GDK_KEY_c || keyval == GDK_KEY_C))
+               is_webkit_keypress = TRUE;
 
-       if ((((event)->state & GDK_CONTROL_MASK) &&
-           (keyval == GDK_KEY_Insert)) ||
-           (((event)->state & GDK_CONTROL_MASK) &&
-           (keyval == GDK_KEY_c))) {
-               webkit_editor_copy (E_CONTENT_EDITOR (wk_editor));
+       /* Copy - secondary shortcut */
+       if (is_ctrl && !is_shift && keyval == GDK_KEY_Insert) {
+               webkit_editor_copy (E_CONTENT_EDITOR (widget));
                return TRUE;
        }
 
-       if (((event)->state & GDK_CONTROL_MASK) &&
-           (keyval == GDK_KEY_z)) {
-               webkit_editor_undo (E_CONTENT_EDITOR (wk_editor));
-               return TRUE;
-       }
+       /* Cut */
+       if (is_ctrl && !is_shift && (keyval == GDK_KEY_x || keyval == GDK_KEY_X))
+               is_webkit_keypress = TRUE;
 
-       if (((event)->state & (GDK_CONTROL_MASK)) &&
-           (keyval == GDK_KEY_Z)) {
-               webkit_editor_redo (E_CONTENT_EDITOR (wk_editor));
+       /* Cut - secondary shortcut */
+       if (!is_ctrl && is_shift && keyval == GDK_KEY_Delete) {
+               webkit_editor_cut (E_CONTENT_EDITOR (widget));
                return TRUE;
        }
 
-       if ((((event)->state & GDK_SHIFT_MASK) &&
-           (keyval == GDK_KEY_Delete)) ||
-           (((event)->state & GDK_CONTROL_MASK) &&
-           (keyval == GDK_KEY_x))) {
-               webkit_editor_cut (E_CONTENT_EDITOR (wk_editor));
+       /* Paste */
+       if (is_ctrl && !is_shift && (keyval == GDK_KEY_v || keyval == GDK_KEY_V))
+               is_webkit_keypress = TRUE;
+
+       /* Paste - secondary shortcut */
+       if (!is_ctrl && is_shift && keyval == GDK_KEY_Insert) {
+               webkit_editor_paste (E_CONTENT_EDITOR (widget));
                return TRUE;
        }
 
-       if (((event)->state & GDK_CONTROL_MASK) &&
-           ((event)->state & GDK_SHIFT_MASK) &&
-           (keyval == GDK_KEY_I) &&
+       /* Undo */
+       if (is_ctrl && !is_shift && (keyval == GDK_KEY_z || keyval == GDK_KEY_Z))
+               is_webkit_keypress = TRUE;
+
+       /* Redo */
+       if (is_ctrl && is_shift && (keyval == GDK_KEY_z || keyval == GDK_KEY_Z))
+               is_webkit_keypress = TRUE;
+
+       if (is_ctrl && is_shift && (keyval == GDK_KEY_i || keyval == GDK_KEY_I) &&
            e_util_get_webkit_developer_mode_enabled ()) {
-               webkit_editor_show_inspector (wk_editor);
+               webkit_editor_show_inspector (E_WEBKIT_EDITOR (widget));
                return TRUE;
        }
 
+       /* This is to prevent WebKitGTK+ to process standard key presses, which are
+          supposed to be handled by Evolution instead. By returning FALSE, the parent
+          widget in the hierarchy will process the key press, instead of the WebKitWebView. */
+       if (is_webkit_keypress)
+               return FALSE;
+
        /* Chain up to parent's key_press_event() method. */
        return GTK_WIDGET_CLASS (e_webkit_editor_parent_class)->key_press_event (widget, event);
 }