From f4a053500a27468c67c17531cb9f3b8d35880678 Mon Sep 17 00:00:00 2001
From: Catalin Badea <catalin.badea392@gmail.com>
Date: Wed, 1 Aug 2012 13:55:21 +0300
Subject: Fix javascript autoscrolling.


diff --git a/Swift/Controllers/HistoryViewController.cpp b/Swift/Controllers/HistoryViewController.cpp
index 57b331b..819ba4e 100644
--- a/Swift/Controllers/HistoryViewController.cpp
+++ b/Swift/Controllers/HistoryViewController.cpp
@@ -163,6 +163,10 @@ void HistoryViewController::handleReturnPressed(const std::string& keyword) {
 }
 
 void HistoryViewController::handleScrollReachedTop(const boost::gregorian::date& date) {
+	if (!selectedItem_) {
+		return;
+	}
+
 	std::vector<HistoryMessage> messages = historyController_->getMessagesFromPreviousDate(selfJID_, selectedItem_->getJID(), selectedItemType_, date);
 
 	foreach (const HistoryMessage& message, messages) {
@@ -172,6 +176,10 @@ void HistoryViewController::handleScrollReachedTop(const boost::gregorian::date&
 }
 
 void HistoryViewController::handleScrollReachedBottom(const boost::gregorian::date& date) {
+	if (!selectedItem_) {
+		return;
+	}
+
 	std::vector<HistoryMessage> messages = historyController_->getMessagesFromNextDate(selfJID_, selectedItem_->getJID(), selectedItemType_, date);
 
 	foreach (const HistoryMessage& message, messages) {
diff --git a/Swift/QtUI/QtChatView.cpp b/Swift/QtUI/QtChatView.cpp
index 3ad957c..f6250bc 100644
--- a/Swift/QtUI/QtChatView.cpp
+++ b/Swift/QtUI/QtChatView.cpp
@@ -28,7 +28,7 @@
 
 namespace Swift {
 
-QtChatView::QtChatView(QtChatTheme* theme, QWidget* parent) : QWidget(parent), fontSizeSteps_(0) {
+QtChatView::QtChatView(QtChatTheme* theme, QWidget* parent, bool disableAutoScroll) : QWidget(parent), fontSizeSteps_(0) {
 	theme_ = theme;
 
 	QVBoxLayout* mainLayout = new QVBoxLayout(this);
@@ -66,6 +66,10 @@ QtChatView::QtChatView(QtChatTheme* theme, QWidget* parent) : QWidget(parent), f
 	viewReady_ = false;
 	isAtBottom_ = true;
 	resetView();
+
+	if (disableAutoScroll) {
+		webPage_->mainFrame()->evaluateJavaScript("var disableAutoScroll = true;");
+	}
 }
 
 void QtChatView::handleClearRequested() {
@@ -360,6 +364,8 @@ void QtChatView::resetView() {
 	chatElement.appendInside(newInsertPoint_);
 	Q_ASSERT(!newInsertPoint_.isNull());
 
+	scrollToBottom();
+
 	connect(webPage_->mainFrame(), SIGNAL(contentsSizeChanged(const QSize&)), this, SLOT(handleFrameSizeChanged()), Qt::UniqueConnection);
 }
 
diff --git a/Swift/QtUI/QtChatView.h b/Swift/QtUI/QtChatView.h
index dada46a..8c523d5 100644
--- a/Swift/QtUI/QtChatView.h
+++ b/Swift/QtUI/QtChatView.h
@@ -28,7 +28,7 @@ namespace Swift {
 	class QtChatView : public QWidget {
 			Q_OBJECT
 		public:
-			QtChatView(QtChatTheme* theme, QWidget* parent);
+			QtChatView(QtChatTheme* theme, QWidget* parent, bool disableAutoScroll = false);
 			void addMessageTop(boost::shared_ptr<ChatSnippet> snippet);
 			void addMessageBottom(boost::shared_ptr<ChatSnippet> snippet);
 			void addLastSeenLine();
diff --git a/Swift/QtUI/QtHistoryWindow.cpp b/Swift/QtUI/QtHistoryWindow.cpp
index 94d604e..d926db7 100644
--- a/Swift/QtUI/QtHistoryWindow.cpp
+++ b/Swift/QtUI/QtHistoryWindow.cpp
@@ -36,7 +36,7 @@ QtHistoryWindow::QtHistoryWindow(SettingsProvider* settings, UIEventStream* even
 	idCounter_ = 0;
 
 	delete ui_.conversation_;
-	conversation_ = new QtChatView(theme_, this);
+	conversation_ = new QtChatView(theme_, this, true);
 	QSizePolicy sizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
 	sizePolicy.setHorizontalStretch(80);
 	sizePolicy.setVerticalStretch(0);
diff --git a/Swift/resources/themes/Default/Template.html b/Swift/resources/themes/Default/Template.html
index e94701a..3885330 100755
--- a/Swift/resources/themes/Default/Template.html
+++ b/Swift/resources/themes/Default/Template.html
@@ -272,6 +272,10 @@
 		
 		var intervall_scroll;
 		function scrollToBottom() {
+			if (disableAutoScroll) {
+				return;
+			}
+
 			//document.body.scrollTop = (document.body.scrollHeight-window.innerHeight);
 			//return;
 			if( intervall_scroll ) clearInterval( intervall_scroll );
diff --git a/Swift/resources/themes/Default/main.css b/Swift/resources/themes/Default/main.css
index d2d4b57..25bd5bc 100755
--- a/Swift/resources/themes/Default/main.css
+++ b/Swift/resources/themes/Default/main.css
@@ -291,3 +291,7 @@ body {
 .outgoingItem .timeStamp {
 	color:#9ecf35;
 }
+
+html {
+	height: 101%;
+}
-- 
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