Qt: Show Lua scripts as links in the about box.

Add UrlLinkDelegate::setColCheck, which lets you render strings as URLs
or plain text according to a regex. Use it to show Lua scripts as URLs
in the about box.

Open links on double clicks and add column checks.

Change-Id: Iaf5cd8a46a0b66a7d45079ba045ed2bbcb0ed005
Reviewed-on: https://code.wireshark.org/review/25542
Reviewed-by: Gerald Combs <gerald@wireshark.org>
Petri-Dish: Gerald Combs <gerald@wireshark.org>
Tested-by: Petri Dish Buildbot
Reviewed-by: Stig Bjørlykke <stig@bjorlykke.org>

2 files changed, 34 insertions, 4 deletions

diff --git a/ui/qt/models/url_link_delegate.cpp b/ui/qt/models/url_link_delegate.cpp
index 14d05daac1..205a35921a 100644
--- a/ui/qt/models/url_link_delegate.cpp
+++ b/ui/qt/models/url_link_delegate.cpp
@@ -11,12 +11,35 @@
 #include <ui/qt/models/url_link_delegate.h>
 
 #include <QPainter>
+#include <QRegExp>
 
 UrlLinkDelegate::UrlLinkDelegate(QObject *parent)
- : QStyledItemDelegate(parent)
+ : QStyledItemDelegate(parent),
+   re_col_(-1),
+   url_re_(new QRegExp())
 {}
 
+UrlLinkDelegate::~UrlLinkDelegate()
+{
+    delete url_re_;
+}
+
+void UrlLinkDelegate::setColCheck(int column, QString &pattern)
+{
+    re_col_ = column;
+    url_re_->setPattern(pattern);
+}
+
 void UrlLinkDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const {
+    if (re_col_ >= 0 && url_re_) {
+        QModelIndex re_idx = index.model()->index(index.row(), re_col_);
+        QString col_text = index.model()->data(re_idx).toString();
+        if (url_re_->indexIn(col_text) < 0) {
+            QStyledItemDelegate::paint(painter, option, index);
+            return;
+        }
+    }
+
     QStyleOptionViewItem opt = option;
     initStyleOption(&opt, index);
 
diff --git a/ui/qt/models/url_link_delegate.h b/ui/qt/models/url_link_delegate.h
index fa1a20bd6c..c35a611d18 100644
--- a/ui/qt/models/url_link_delegate.h
+++ b/ui/qt/models/url_link_delegate.h
@@ -11,12 +11,11 @@
 #ifndef URL_LINK_DELEGATE_H
 #define URL_LINK_DELEGATE_H
 
-#include <config.h>
-
 #include <QStyledItemDelegate>
 #include <QStyleOptionViewItem>
 #include <QModelIndex>
-#include <QAbstractItemModel>
+
+class QRegExp;
 
 class UrlLinkDelegate : public QStyledItemDelegate
 {
@@ -24,9 +23,17 @@ class UrlLinkDelegate : public QStyledItemDelegate
 
 public:
     explicit UrlLinkDelegate(QObject *parent = Q_NULLPTR);
+    ~UrlLinkDelegate();
+    // If pattern matches the string in column, render as a URL.
+    // Otherwise render as plain text.
+    void setColCheck(int column, QString &pattern);
 
 protected:
     void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const;
+
+private:
+    int re_col_;
+    QRegExp *url_re_;
 };
 #endif // URL_LINK_DELEGATE_H