linux-kernel - [PATCH v3 2/7] kconfig: qconf: make search fully work again on split mode

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Message-Id: <7febfd14786f364acb6351ab07f6ce6434475b31.1593498345.git.mchehab+huawei@kernel.org>
Date:   Tue, 30 Jun 2020 08:26:36 +0200
From:   Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        Maxim Levitsky <mlevitsk@...hat.com>,
        Masahiro Yamada <masahiroy@...nel.org>,
        linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v3 2/7] kconfig: qconf: make search fully work again on split mode

When the search dialog box finds symbols/menus that match
the search criteria, it presents all results at the window.

Clicking on a search result should make qconf to navigate
to the selected item. This works on singleMode and on
fullMode, but on splitMode, the navigation is broken.

This was partially caused by an incomplete Qt5 conversion
and by the followup patches that restored the original
behavior.

When qconf is on split mode, it has to update both the
config and the menu views. Right now, such logic is broken,
as it is not seeking using the right structures.

On qconf, the screen is split into 3 parts:

	+------------+-------+
	|            |       |
	|   Config   | Menu  |
	|            |       |
	+------------+-------+
	|                    |
	|     ConfigInfo     |
	|                    |
	+--------------------+

On singleMode and on fullMode, the menuView is hidden, and search
updates only the configList (which controls the ConfigView).

On SplitMode, the search logic should detect if the variable is a
leaf or not. If it is a leaf, it should be presented at the menuView,
and both configList and menuList should be updated. Otherwise, just
the configList should be updated.

Link: https://lore.kernel.org/lkml/a98b0f0ebe0c23615a76f1d23f25fd0c84835e6b.camel@redhat.com/
Reported-by: Maxim Levitsky <mlevitsk@...hat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
---
 scripts/kconfig/qconf.cc | 25 ++++++++++++++++++-------
 1 file changed, 18 insertions(+), 7 deletions(-)

diff --git a/scripts/kconfig/qconf.cc b/scripts/kconfig/qconf.cc
index 0e06afa08908..9def59423743 100644
--- a/scripts/kconfig/qconf.cc
+++ b/scripts/kconfig/qconf.cc
@@ -1636,22 +1636,33 @@ void ConfigMainWindow::setMenuLink(struct menu *menu)
 			return;
 		list->setRootMenu(parent);
 		break;
-	case symbolMode:
+	case menuMode:
 		if (menu->flags & MENU_ROOT) {
-			configList->setRootMenu(menu);
+			menuList->setRootMenu(menu);
 			configList->clearSelection();
-			list = menuList;
-		} else {
 			list = configList;
+		} else {
 			parent = menu_get_parent_menu(menu->parent);
 			if (!parent)
 				return;
-			item = menuList->findConfigItem(parent);
+
+			/* Clear an already-selected item */
+			if (!configList->selectedItems().isEmpty()) {
+				item = (ConfigItem*)configList->selectedItems().first();
+				if (item)
+					item->setSelected(false);
+			}
+
+			/* Select the config view */
+			item = configList->findConfigItem(parent);
 			if (item) {
 				item->setSelected(true);
-				menuList->scrollToItem(item);
+				configList->scrollToItem(item);
 			}
-			list->setRootMenu(parent);
+
+			menuList->setRootMenu(parent);
+			menuList->clearSelection();
+			list = menuList;
 		}
 		break;
 	case fullMode:
-- 
2.26.2