Enable display filter autocomplete on find packet search.

Bug: 16638
Change-Id: Ifd9c9e4392fdc3d32b2aa4466d5a7f2835893338
Reviewed-on: https://code.wireshark.org/review/37682
Petri-Dish: Martin Mathieson <martin.r.mathieson@googlemail.com>
Tested-by: Petri Dish Buildbot
Reviewed-by: Anders Broman <a.broman58@gmail.com>

4 files changed, 23 insertions, 5 deletions

diff --git a/ui/qt/search_frame.cpp b/ui/qt/search_frame.cpp
index 8ef0e3c5f6..51c3ea145e 100644
--- a/ui/qt/search_frame.cpp
+++ b/ui/qt/search_frame.cpp
@@ -274,6 +274,9 @@ void SearchFrame::updateWidgets()
         return;
     }
 
+    // Enable completion only for display filter search.
+    sf_ui_->searchLineEdit->allowCompletion(search_type == df_search_);
+
     if (sf_ui_->searchLineEdit->text().isEmpty() || sf_ui_->searchLineEdit->syntaxState() == SyntaxLineEdit::Invalid) {
         sf_ui_->findButton->setEnabled(false);
     } else {
diff --git a/ui/qt/search_frame.ui b/ui/qt/search_frame.ui
index 8d709d0f3d..c3bb99087c 100644
--- a/ui/qt/search_frame.ui
+++ b/ui/qt/search_frame.ui
@@ -147,7 +147,7 @@
     </widget>
    </item>
    <item>
-    <widget class="SyntaxLineEdit" name="searchLineEdit">
+    <widget class="DisplayFilterEdit" name="searchLineEdit">
      <property name="sizePolicy">
       <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
        <horstretch>1</horstretch>
@@ -195,9 +195,9 @@
    <container>1</container>
   </customwidget>
   <customwidget>
-   <class>SyntaxLineEdit</class>
+   <class>DisplayFilterEdit</class>
    <extends>QLineEdit</extends>
-   <header>widgets/syntax_line_edit.h</header>
+   <header>widgets/display_filter_edit.h</header>
   </customwidget>
  </customwidgets>
  <resources/>
diff --git a/ui/qt/widgets/syntax_line_edit.cpp b/ui/qt/widgets/syntax_line_edit.cpp
index 71128d0ee1..187f432ee8 100644
--- a/ui/qt/widgets/syntax_line_edit.cpp
+++ b/ui/qt/widgets/syntax_line_edit.cpp
@@ -38,7 +38,8 @@ const int max_completion_items_ = 20;
 SyntaxLineEdit::SyntaxLineEdit(QWidget *parent) :
     QLineEdit(parent),
     completer_(NULL),
-    completion_model_(NULL)
+    completion_model_(NULL),
+    completion_enabled_(false)
 {
     // Try to matche QLineEdit's placeholder text color (which sets the
     // alpha channel to 50%, which doesn't work in style sheets).
@@ -70,6 +71,14 @@ void SyntaxLineEdit::setCompleter(QCompleter *c)
     completer_->setMaxVisibleItems(max_completion_items_);
     QObject::connect(completer_, static_cast<void (QCompleter::*)(const QString &)>(&QCompleter::activated),
                      this, &SyntaxLineEdit::insertFieldCompletion);
+
+    // Auto-completion is turned on.
+    completion_enabled_ = true;
+}
+
+void SyntaxLineEdit::allowCompletion(bool enabled)
+{
+    completion_enabled_ = enabled;
 }
 
 void SyntaxLineEdit::setSyntaxState(SyntaxState state) {
@@ -148,6 +157,10 @@ void SyntaxLineEdit::insertFilter(const QString &filter)
 
 void SyntaxLineEdit::checkDisplayFilter(QString filter)
 {
+    if (!completion_enabled_) {
+        return;
+    }
+
     if (filter.isEmpty()) {
         setSyntaxState(SyntaxLineEdit::Empty);
         return;
@@ -317,7 +330,7 @@ void SyntaxLineEdit::completionKeyPressEvent(QKeyEvent *event)
     // ...otherwise process the key ourselves.
     SyntaxLineEdit::keyPressEvent(event);
 
-    if (!completer_ || !completion_model_ || !prefs.gui_autocomplete_filter) return;
+    if (!completion_enabled_ || !completer_ || !completion_model_ || !prefs.gui_autocomplete_filter) return;
 
     // Do nothing on bare shift.
     if ((event->modifiers() & Qt::ShiftModifier) && event->text().isEmpty()) return;
diff --git a/ui/qt/widgets/syntax_line_edit.h b/ui/qt/widgets/syntax_line_edit.h
index 820795fd96..cc1b8461e3 100644
--- a/ui/qt/widgets/syntax_line_edit.h
+++ b/ui/qt/widgets/syntax_line_edit.h
@@ -36,6 +36,7 @@ public:
 
     void setCompleter(QCompleter *c);
     QCompleter *completer() const { return completer_; }
+    void allowCompletion(bool enabled);
 
 public slots:
     void setStyleSheet(const QString &style_sheet);
@@ -70,6 +71,7 @@ private:
     QString syntax_error_message_;
     QString token_chars_;
     QColor busy_fg_;
+    bool completion_enabled_;
 
 private slots:
     void insertFieldCompletion(const QString &completion_text);