1 files changed, 132 insertions, 0 deletions
diff --git a/ui/qt/widgets/interface_toolbar_lineedit.cpp b/ui/qt/widgets/interface_toolbar_lineedit.cpp
new file mode 100644
index 00000000..02383f58
--- /dev/null
+++ b/ui/qt/widgets/interface_toolbar_lineedit.cpp
@@ -0,0 +1,132 @@
+/* interface_toolbar_lineedit.cpp
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "config.h"
+
+#include <ui/qt/widgets/interface_toolbar_lineedit.h>
+#include <ui/qt/widgets/stock_icon_tool_button.h>
+#include "epan/prefs.h"
+#include <ui/qt/utils/color_utils.h>
+
+#include <QStyle>
+
+// To do:
+// - Make a narrower apply button
+
+InterfaceToolbarLineEdit::InterfaceToolbarLineEdit(QWidget *parent, QString validation_regex, bool is_required) :
+    QLineEdit(parent),
+    regex_expr_(validation_regex, QRegularExpression::UseUnicodePropertiesOption),
+    is_required_(is_required),
+    text_edited_(false)
+{
+    apply_button_ = new StockIconToolButton(this, "x-filter-apply");
+    apply_button_->setCursor(Qt::ArrowCursor);
+    apply_button_->setEnabled(false);
+    apply_button_->setToolTip(tr("Apply changes"));
+    apply_button_->setIconSize(QSize(24, 14));
+    apply_button_->setStyleSheet(
+            "QToolButton {"
+            "  border: none;"
+            "  background: transparent;" // Disables platform style on Windows.
+            "  padding: 0 0 0 0;"
+            "}"
+            );
+
+    updateStyleSheet(isValid());
+
+    connect(this, &InterfaceToolbarLineEdit::textChanged, this, &InterfaceToolbarLineEdit::validateText);
+    connect(this, &InterfaceToolbarLineEdit::textEdited, this, &InterfaceToolbarLineEdit::validateEditedText);
+    connect(this, &InterfaceToolbarLineEdit::returnPressed, this, &InterfaceToolbarLineEdit::applyEditedText);
+    connect(apply_button_, &StockIconToolButton::clicked, this, &InterfaceToolbarLineEdit::applyEditedText);
+}
+
+void InterfaceToolbarLineEdit::validateText()
+{
+    bool valid = isValid();
+
+    apply_button_->setEnabled(valid);
+    updateStyleSheet(valid);
+}
+
+void InterfaceToolbarLineEdit::validateEditedText()
+{
+    text_edited_ = true;
+}
+
+void InterfaceToolbarLineEdit::applyEditedText()
+{
+    if (text_edited_ && isValid())
+    {
+        emit editedTextApplied();
+        disableApplyButton();
+    }
+}
+
+void InterfaceToolbarLineEdit::disableApplyButton()
+{
+    apply_button_->setEnabled(false);
+    text_edited_ = false;
+}
+
+bool InterfaceToolbarLineEdit::isValid()
+{
+    bool valid = true;
+
+    if (is_required_ && text().length() == 0)
+    {
+        valid = false;
+    }
+
+    if (!regex_expr_.pattern().isEmpty() && text().length() > 0)
+    {
+        if (!regex_expr_.isValid() || !regex_expr_.match(text()).hasMatch())
+        {
+            valid = false;
+        }
+    }
+
+    return valid;
+}
+
+void InterfaceToolbarLineEdit::updateStyleSheet(bool is_valid)
+{
+    int frameWidth = style()->pixelMetric(QStyle::PM_DefaultFrameWidth);
+    QSize apsz = apply_button_->sizeHint();
+
+    QString style_sheet = QString(
+            "InterfaceToolbarLineEdit {"
+            "  padding-right: %1px;"
+            "  background-color: %2;"
+            "}"
+            )
+            .arg(apsz.width() + frameWidth)
+            .arg(is_valid || !isEnabled() ? QString("") : ColorUtils::fromColorT(prefs.gui_text_invalid).name());
+
+#ifdef Q_OS_MAC
+    style_sheet += QString(
+            "InterfaceToolbarLineEdit {"
+            "  border: 1px solid palette(%1);"
+            "  border-radius: 3px;"
+            "}"
+            ).arg(ColorUtils::themeIsDark() ? QString("light") : QString("dark"));
+#endif
+
+    setStyleSheet(style_sheet);
+}
+
+void InterfaceToolbarLineEdit::resizeEvent(QResizeEvent *)
+{
+    int frameWidth = style()->pixelMetric(QStyle::PM_DefaultFrameWidth);
+    QSize apsz = apply_button_->sizeHint();
+
+    apply_button_->move(contentsRect().right() - frameWidth - apsz.width() + 2,
+                        contentsRect().top());
+    apply_button_->setMinimumHeight(contentsRect().height());
+    apply_button_->setMaximumHeight(contentsRect().height());
+}