From 0d9c81b9c1b5fba27aa9baf748383cd87371c040 Mon Sep 17 00:00:00 2001
From: Thierry Crozat <criezy@scummvm.org>
Date: Mon, 23 Dec 2024 16:02:47 +0100
Subject: [PATCH] GUI: Disable load button in Grid Launcher when no savegame
 can be loaded

---
 gui/launcher.cpp     |  2 +-
 gui/widgets/grid.cpp | 10 +++++++---
 gui/widgets/grid.h   |  6 ++++--
 3 files changed, 12 insertions(+), 6 deletions(-)

diff --git a/gui/launcher.cpp b/gui/launcher.cpp
index 4a2867cb2c7a..2b389e7ccb0a 100644
--- a/gui/launcher.cpp
+++ b/gui/launcher.cpp
@@ -1679,7 +1679,7 @@ void LauncherGrid::build() {
 	_gridItemSizeLabel->setValue(ConfMan.getInt("grid_items_per_row"));
 
 	// Add list with game titles
-	_grid = new GridWidget(this, "LauncherGrid.IconArea");
+	_grid = new GridWidget(this, "LauncherGrid.IconArea", this);
 	// Populate the list
 	updateListing();
 
diff --git a/gui/widgets/grid.cpp b/gui/widgets/grid.cpp
index 91ea47edabb5..124d2be78695 100644
--- a/gui/widgets/grid.cpp
+++ b/gui/widgets/grid.cpp
@@ -28,6 +28,7 @@
 
 #include "gui/gui-manager.h"
 #include "gui/widgets/grid.h"
+#include "gui/launcher.h"
 
 #include "gui/ThemeEval.h"
 
@@ -264,7 +265,7 @@ void GridItemWidget::handleMouseDown(int x, int y, int button, int clickCount) {
 
 #pragma mark -
 
-GridItemTray::GridItemTray(GuiObject *boss, int x, int y, int w, int h, int entryID, GridWidget *grid)
+GridItemTray::GridItemTray(GuiObject *boss, int x, int y, int w, int h, int entryID, GridWidget *grid, LauncherDialog *launcher)
 	: Dialog(x, y, w, h), CommandSender(boss) {
 
 	_entryID = entryID;
@@ -286,6 +287,8 @@ GridItemTray::GridItemTray(GuiObject *boss, int x, int y, int w, int h, int entr
 	_loadButton = new PicButtonWidget(this, trayPaddingX, trayPaddingY + buttonHeight + buttonSpacingY,
 									  buttonWidth, buttonHeight,
 									  _("Saves"), kLoadButtonCmd);
+	if (launcher)
+		_loadButton->setEnabled(launcher->canLoadSavegames(entryID));
 	_editButton = new PicButtonWidget(this, trayPaddingX + buttonWidth + buttonSpacingX, trayPaddingY + buttonHeight + buttonSpacingY,
 									  buttonWidth, buttonHeight,
 									  _("Edit"), kEditButtonCmd);
@@ -400,9 +403,10 @@ Graphics::ManagedSurface *loadSurfaceFromFile(const Common::String &name, int re
 
 #pragma mark -
 
-GridWidget::GridWidget(GuiObject *boss, const Common::String &name)
+GridWidget::GridWidget(GuiObject *boss, const Common::String &name, LauncherDialog *launcher)
 	: ContainerWidget(boss, name), CommandSender(boss) {
 
+	_launcher = launcher;
 	_thumbnailHeight = 0;
 	_thumbnailWidth = 0;
 	_flagIconHeight = 0;
@@ -1115,7 +1119,7 @@ void GridWidget::reflowLayout() {
 void GridWidget::openTrayAtSelected() {
 	if (_selectedEntry) {
 		GridItemTray *tray = new GridItemTray(this, _x + _selectedEntry->x - _gridXSpacing / 3, _y + _selectedEntry->y + _selectedEntry->h - _scrollPos,
-								_gridItemWidth + 2 * (_gridXSpacing / 3), _trayHeight, _selectedEntry->entryID, this);
+											  _gridItemWidth + 2 * (_gridXSpacing / 3), _trayHeight, _selectedEntry->entryID, this, _launcher);
 		tray->runModal();
 		delete tray;
 	}
diff --git a/gui/widgets/grid.h b/gui/widgets/grid.h
index 97f4808d5933..f890c3fbc99a 100644
--- a/gui/widgets/grid.h
+++ b/gui/widgets/grid.h
@@ -35,6 +35,7 @@ namespace GUI {
 class ScrollBarWidget;
 class GridItemWidget;
 class GridWidget;
+class LauncherDialog;
 
 enum {
 	kPlayButtonCmd = 'PLAY',
@@ -84,7 +85,7 @@ class GridItemTray: public Dialog, public CommandSender {
 	PicButtonWidget	*_loadButton;
 	PicButtonWidget	*_editButton;
 public:
-	GridItemTray(GuiObject *boss, int x, int y, int w, int h, int entryID, GridWidget *grid);
+	GridItemTray(GuiObject *boss, int x, int y, int w, int h, int entryID, GridWidget *grid, LauncherDialog *launcher);
 
 	void reflowLayout() override;
 
@@ -126,6 +127,7 @@ class GridWidget : public ContainerWidget, public CommandSender {
 	Common::Array<GridItemWidget *>		_gridItems;
 
 	ScrollBarWidget *_scrollBar;
+	LauncherDialog *_launcher;
 
 	int				_scrollBarWidth;
 	int				_scrollWindowHeight;
@@ -169,7 +171,7 @@ class GridWidget : public ContainerWidget, public CommandSender {
 
 	Common::U32String	_filter;
 
-	GridWidget(GuiObject *boss, const Common::String &name);
+	GridWidget(GuiObject *boss, const Common::String &name, LauncherDialog *launcher);
 	~GridWidget();
 
 	template<typename T>