add custom dialog for diffing

src/CMakeLists.txt

@@ -49,6 +49,7 @@ set(hotspot_SRCS
     perfoutputwidgettext.cpp
     perfoutputwidgetkonsole.cpp
     costcontextmenu.cpp
+    diffdialog.cpp
 
     # ui files:
     mainwindow.ui
@@ -66,6 +67,7 @@ set(hotspot_SRCS
     settingsdialog.ui
     flamegraphsettings.ui
     debuginfoddialog.ui
+    diffdialog.ui
 
     # resources:
     resources.qrc

src/diffdialog.cpp

@@ -0,0 +1,27 @@
+#include "diffdialog.h"
+#include "ui_diffdialog.h"
+
+DiffDialog::DiffDialog(QWidget* parent)
+    : QDialog(parent)
+    , ui(new Ui::DiffDialog)
+{
+    ui->setupUi(this);
+    const auto filterString = QLatin1String("perf*.data\nperf.data*");
+    ui->file_a->setFilter(filterString);
+    ui->file_b->setFilter(filterString);
+
+    connect(ui->buttonBox, &QDialogButtonBox::accepted, this, &QDialog::accepted);
+    connect(ui->buttonBox, &QDialogButtonBox::rejected, this, &QDialog::close);
+}
+
+DiffDialog::~DiffDialog() = default;
+
+QString DiffDialog::fileA() const
+{
+    return ui->file_a->url().path();
+}
+
+QString DiffDialog::fileB() const
+{
+    return ui->file_b->url().path();
+}

src/diffdialog.h

@@ -0,0 +1,23 @@
+#ifndef DIFFDIALOG_H
+#define DIFFDIALOG_H
+
+#include <QDialog>
+
+namespace Ui {
+class DiffDialog;
+}
+
+class DiffDialog : public QDialog
+{
+public:
+    explicit DiffDialog(QWidget* parent = nullptr);
+    ~DiffDialog();
+
+    QString fileA() const;
+    QString fileB() const;
+
+private:
+    QScopedPointer<Ui::DiffDialog> ui;
+};
+
+#endif // DIFFDIALOG_H

src/diffdialog.ui

@@ -0,0 +1,70 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>DiffDialog</class>
+ <widget class="QDialog" name="DiffDialog">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>400</width>
+    <height>300</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Diff two files</string>
+  </property>
+  <property name="sizeGripEnabled">
+   <bool>false</bool>
+  </property>
+  <layout class="QFormLayout" name="formLayout">
+   <property name="leftMargin">
+    <number>6</number>
+   </property>
+   <property name="topMargin">
+    <number>6</number>
+   </property>
+   <property name="rightMargin">
+    <number>6</number>
+   </property>
+   <property name="bottomMargin">
+    <number>6</number>
+   </property>
+   <item row="0" column="0">
+    <widget class="QLabel" name="label">
+     <property name="text">
+      <string>File A:</string>
+     </property>
+    </widget>
+   </item>
+   <item row="1" column="0">
+    <widget class="QLabel" name="label_2">
+     <property name="text">
+      <string>File B:</string>
+     </property>
+    </widget>
+   </item>
+   <item row="0" column="1">
+    <widget class="KUrlRequester" name="file_a"/>
+   </item>
+   <item row="1" column="1">
+    <widget class="KUrlRequester" name="file_b"/>
+   </item>
+   <item row="2" column="1">
+    <widget class="QDialogButtonBox" name="buttonBox">
+     <property name="standardButtons">
+      <set>QDialogButtonBox::Cancel|QDialogButtonBox::Open</set>
+     </property>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <customwidgets>
+  <customwidget>
+   <class>KUrlRequester</class>
+   <extends>QWidget</extends>
+   <header>kurlrequester.h</header>
+  </customwidget>
+ </customwidgets>
+ <resources/>
+ <connections/>
+</ui>

src/mainwindow.cpp

@@ -27,6 +27,7 @@
 
 #include "mainwindow.h"
 #include "costcontextmenu.h"
+#include "diffdialog.h"
 #include "recordpage.h"
 #include "resultspage.h"
 #include "settings.h"
@@ -116,6 +117,7 @@ MainWindow::MainWindow(QWidget* parent)
     , m_recordPage(new RecordPage(this))
     , m_resultsPage(new ResultsPage(m_parser, this))
     , m_settingsDialog(new SettingsDialog(this))
+    , m_diffDialog(new DiffDialog(this))
 {
     ui->setupUi(this);
 
@@ -149,21 +151,13 @@ MainWindow::MainWindow(QWidget* parent)
     connect(m_startPage, &StartPage::recordButtonClicked, this, &MainWindow::onRecordButtonClicked);
     connect(m_startPage, &StartPage::stopParseButtonClicked, this,
             static_cast<void (MainWindow::*)()>(&MainWindow::clear));
-    connect(m_startPage, &StartPage::diffButtonClicked, this, [this] {
-        const auto fileNameA = QFileDialog::getOpenFileName(this, tr("Open File A"), QDir::currentPath(),
-                                                            tr("Data Files (perf*.data perf.data.*);;All Files (*)"));
-        if (fileNameA.isEmpty()) {
-            return;
-        }
-
-        const auto fileNameB = QFileDialog::getOpenFileName(this, tr("Open File B"), QDir::currentPath(),
-                                                            tr("Data Files (perf*.data perf.data.*);;All Files (*)"));
-        if (fileNameB.isEmpty()) {
-            return;
-        }
 
-        openFile(fileNameA, false, fileNameB);
+    connect(m_startPage, &StartPage::diffButtonClicked, this, [this] { m_diffDialog->open(); });
+    connect(m_diffDialog, &QDialog::accepted, this, [this] {
+        m_diffDialog->close();
+        openFile(m_diffDialog->fileA(), false, m_diffDialog->fileB());
     });
+
     connect(m_parser, &PerfParser::progress, m_startPage, &StartPage::onParseFileProgress);
     connect(this, &MainWindow::openFileError, m_startPage, &StartPage::onOpenFileError);
     connect(m_recordPage, &RecordPage::homeButtonClicked, this, &MainWindow::onHomeButtonClicked);

src/mainwindow.h

@@ -46,6 +46,7 @@ class StartPage;
 class ResultsPage;
 class RecordPage;
 class SettingsDialog;
+class DiffDialog;
 
 class MainWindow : public KParts::MainWindow
 {
@@ -90,6 +91,7 @@ public slots:
     RecordPage* m_recordPage;
     ResultsPage* m_resultsPage;
     SettingsDialog* m_settingsDialog;
+    DiffDialog* m_diffDialog;
 
     QString m_lastUsedSettings;
     KRecentFilesAction* m_recentFilesAction = nullptr;