From 1b4afcb93715e1ec3eb79b16beaaabd3120a39a5 Mon Sep 17 00:00:00 2001
From: krepa098 <krepa098@gmail.com>
Date: Wed, 10 Sep 2014 16:03:53 +0200
Subject: [PATCH] detect URLs and show them as hyperlink

---
 widget/chatareawidget.cpp  | 16 ++++++++++++++--
 widget/chatareawidget.h    |  7 +++++--
 widget/tool/chataction.cpp | 20 +++++++++++++++++++-
 3 files changed, 38 insertions(+), 5 deletions(-)

diff --git a/widget/chatareawidget.cpp b/widget/chatareawidget.cpp
index bd261f3bf..a6762c673 100644
--- a/widget/chatareawidget.cpp
+++ b/widget/chatareawidget.cpp
@@ -19,14 +19,21 @@
 #include <QAbstractTextDocumentLayout>
 #include <QMessageBox>
 #include <QScrollBar>
+#include <QDesktopServices>
 
 ChatAreaWidget::ChatAreaWidget(QWidget *parent) :
-    QTextEdit(parent)
+    QTextBrowser(parent)
 {
     setReadOnly(true);
     viewport()->setCursor(Qt::ArrowCursor);
     setContextMenuPolicy(Qt::CustomContextMenu);
     setUndoRedoEnabled(false);
+
+    setOpenExternalLinks(false);
+    setOpenLinks(false);
+    setAcceptRichText(false);
+
+    connect(this, &ChatAreaWidget::anchorClicked, this, &ChatAreaWidget::onAnchorClicked);
 }
 
 ChatAreaWidget::~ChatAreaWidget()
@@ -67,7 +74,12 @@ void ChatAreaWidget::mouseReleaseEvent(QMouseEvent * event)
     }
 }
 
-void ChatAreaWidget::insertMessage(ChatAction* msgAction)
+void ChatAreaWidget::onAnchorClicked(const QUrl &url)
+{
+    QDesktopServices::openUrl(url);
+}
+
+void ChatAreaWidget::insertMessage(ChatAction *msgAction)
 {
     if (msgAction == nullptr)
         return;
diff --git a/widget/chatareawidget.h b/widget/chatareawidget.h
index cf9026877..e42f576f1 100644
--- a/widget/chatareawidget.h
+++ b/widget/chatareawidget.h
@@ -17,12 +17,12 @@
 #ifndef CHATAREAWIDGET_H
 #define CHATAREAWIDGET_H
 
-#include <QTextEdit>
+#include <QTextBrowser>
 #include <QList>
 
 class ChatAction;
 
-class ChatAreaWidget : public QTextEdit
+class ChatAreaWidget : public QTextBrowser
 {
     Q_OBJECT
 public:
@@ -36,6 +36,9 @@ signals:
 protected:
     void mouseReleaseEvent(QMouseEvent * event);
 
+public slots:
+    void onAnchorClicked(const QUrl& url);
+
 private:
     QList<ChatAction*> messages;
     bool lockSliderToBottom;
diff --git a/widget/tool/chataction.cpp b/widget/tool/chataction.cpp
index f362e2b81..cb59290ae 100644
--- a/widget/tool/chataction.cpp
+++ b/widget/tool/chataction.cpp
@@ -22,7 +22,7 @@
 
 QString ChatAction::toHtmlChars(const QString &str)
 {
-    static QList<QPair<QString, QString>> replaceList = {{"&","&amp;"}, {" ","&nbsp;"}, {">","&gt;"}, {"<","&lt;"}};
+    static QList<QPair<QString, QString>> replaceList = {{"&","&amp;"}, {">","&gt;"}, {"<","&lt;"}};
     QString res = str;
 
     for (auto &it : replaceList)
@@ -71,6 +71,24 @@ MessageAction::MessageAction(const QString &author, const QString &message, cons
 {
     QString message_ = SmileyPack::getInstance().smileyfied(toHtmlChars(message));
 
+    // detect urls
+    QRegExp exp("(www\\.|http[s]?:\\/\\/|ftp:\\/\\/)\\S+");
+    int offset = 0;
+    while ((offset = exp.indexIn(message_, offset)) != -1)
+    {
+        QString url = exp.cap();
+
+        // add scheme if not specified
+        if (exp.cap(1) == "www.")
+            url.prepend("http://");
+
+        QString htmledUrl = QString("<a href=\"%1\">%1</a>").arg(url);
+        message_.replace(offset, exp.cap().length(), htmledUrl);
+
+        offset += htmledUrl.length();
+    }
+
+    // detect text quotes
     QStringList messageLines = message_.split("\n");
     message_ = "";
     for (QString& s : messageLines)