From 91125bcbcd3cf9c0de9818f341a55f0e7f7b595c Mon Sep 17 00:00:00 2001
From: Thierry Crozat
Date: Thu, 6 Apr 2017 21:50:16 +0100
Subject: GUI: Add method to know if a widget contains a given widget

---
 gui/widgets/list.cpp            | 6 ++++++
 gui/widgets/list.h              | 1 +
 gui/widgets/scrollcontainer.cpp | 6 ++++++
 gui/widgets/scrollcontainer.h   | 2 ++
 gui/widgets/tab.cpp             | 7 +++++++
 gui/widgets/tab.h               | 2 ++
 6 files changed, 24 insertions(+)

(limited to 'gui/widgets')

diff --git a/gui/widgets/list.cpp b/gui/widgets/list.cpp
index f6e5c67510..48d181e5ec 100644
--- a/gui/widgets/list.cpp
+++ b/gui/widgets/list.cpp
@@ -101,6 +101,12 @@ ListWidget::~ListWidget() {
 	delete[] _textWidth;
 }
 
+bool ListWidget::containsWidget(Widget *w) const {
+	if (w == _scrollBar || _scrollBar->containsWidget(w))
+		return true;
+	return false;
+}
+
 Widget *ListWidget::findWidget(int x, int y) {
 	if (x >= _w - _scrollBarWidth)
 		return _scrollBar;
diff --git a/gui/widgets/list.h b/gui/widgets/list.h
index 1abb2b810e..44366be3e9 100644
--- a/gui/widgets/list.h
+++ b/gui/widgets/list.h
@@ -89,6 +89,7 @@ public:
 	ListWidget(Dialog *boss, int x, int y, int w, int h, const char *tooltip = 0, uint32 cmd = 0);
 	virtual ~ListWidget();
 
+	virtual bool containsWidget(Widget *) const;
 	virtual Widget *findWidget(int x, int y);
 
 	void setList(const StringArray &list, const ColorList *colors = 0);
diff --git a/gui/widgets/scrollcontainer.cpp b/gui/widgets/scrollcontainer.cpp
index 9a7792730d..7c5ab6112c 100644
--- a/gui/widgets/scrollcontainer.cpp
+++ b/gui/widgets/scrollcontainer.cpp
@@ -144,6 +144,12 @@ void ScrollContainerWidget::drawWidget() {
 	g_gui.theme()->drawDialogBackgroundClip(Common::Rect(_x, _y, _x + _w, _y + getHeight() - 1), getBossClipRect(), ThemeEngine::kDialogBackgroundDefault);
 }
 
+bool ScrollContainerWidget::containsWidget(Widget *w) const {
+	if (w == _verticalScroll || _verticalScroll->containsWidget(w))
+		return true;
+	return containsWidgetInChain(_firstWidget, w);
+}
+
 Widget *ScrollContainerWidget::findWidget(int x, int y) {
 	if (_verticalScroll->isVisible() && x >= _w - _verticalScroll->getWidth())
 		return _verticalScroll;
diff --git a/gui/widgets/scrollcontainer.h b/gui/widgets/scrollcontainer.h
index c2d47370ee..9366a0b658 100644
--- a/gui/widgets/scrollcontainer.h
+++ b/gui/widgets/scrollcontainer.h
@@ -46,6 +46,8 @@ public:
 	virtual void handleCommand(CommandSender *sender, uint32 cmd, uint32 data);
 	virtual void reflowLayout();
 
+	virtual bool containsWidget(Widget *) const;
+
 protected:
 	// We overload getChildY to make sure child widgets are positioned correctly.
 	// Essentially this compensates for the space taken up by the tab title header.
diff --git a/gui/widgets/tab.cpp b/gui/widgets/tab.cpp
index 9bf9527c4f..e2e3e72db0 100644
--- a/gui/widgets/tab.cpp
+++ b/gui/widgets/tab.cpp
@@ -334,6 +334,13 @@ void TabWidget::draw() {
 	}
 }
 
+bool TabWidget::containsWidget(Widget *w) const {
+	if (w == _navLeft || w == _navRight || _navLeft->containsWidget(w) || _navRight->containsWidget(w))
+		return true;
+	return containsWidgetInChain(_firstWidget, w);
+}
+
+
 Widget *TabWidget::findWidget(int x, int y) {
 	if (y < _tabHeight) {
 		if (_navButtonsVisible) {
diff --git a/gui/widgets/tab.h b/gui/widgets/tab.h
index a1a5e06481..fe5e4d82bc 100644
--- a/gui/widgets/tab.h
+++ b/gui/widgets/tab.h
@@ -107,6 +107,8 @@ public:
 	virtual int getFirstVisible() const;
 	virtual void setFirstVisible(int tabID, bool adjustIfRoom = false);
 
+	virtual bool containsWidget(Widget *) const;
+
 	virtual void reflowLayout();
 
 	virtual void draw();
-- 
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