implemented simple crash handler

app/dialog/crashhandler/crashhandler.cpp

@@ -0,0 +1,47 @@
+#include "crashhandler.h"
+
+#include <QFile>
+#include <QLabel>
+#include <QDialogButtonBox>
+#include <QTextEdit>
+#include <QVBoxLayout>
+
+CrashHandlerDialog::CrashHandlerDialog(const char *log_file)
+{
+  setWindowTitle(tr("Olive"));
+
+  QVBoxLayout* layout = new QVBoxLayout(this);
+
+  layout->addWidget(new QLabel(tr("We're sorry, Olive has crashed. Please send the following log to the developers to "
+                                  "help resolve this.")));
+
+  QTextEdit* edit = new QTextEdit();
+  layout->addWidget(edit);
+
+  QDialogButtonBox* buttons = new QDialogButtonBox();
+
+  // FIXME: Implement auto-reporting
+  //buttons->addButton(tr("Send Error Report"), QDialogButtonBox::AcceptRole);
+  //buttons->addButton(tr("Don't Send"), QDialogButtonBox::RejectRole);
+  buttons->addButton(QDialogButtonBox::Ok);
+
+  connect(buttons, &QDialogButtonBox::accepted, this, &QDialog::accept);
+  connect(buttons, &QDialogButtonBox::rejected, this, &QDialog::reject);
+  layout->addWidget(buttons);
+
+  QFile log(log_file);
+  if (log.open(QFile::ReadOnly | QFile::Text)) {
+    edit->setText(log.readAll());
+    log.close();
+  }
+}
+
+void CrashHandlerDialog::accept()
+{
+  QDialog::accept();
+}
+
+void CrashHandlerDialog::reject()
+{
+  QDialog::reject();
+}

app/dialog/crashhandler/crashhandler.h

@@ -0,0 +1,19 @@
+#ifndef CRASHHANDLERDIALOG_H
+#define CRASHHANDLERDIALOG_H
+
+#include <QDialog>
+
+class CrashHandlerDialog : public QDialog
+{
+  Q_OBJECT
+public:
+  CrashHandlerDialog(const char* log_file);
+
+public slots:
+  virtual void accept() override;
+
+  virtual void reject() override;
+
+};
+
+#endif // CRASHHANDLERDIALOG_H

app/dialog/crashhandler/crashhandlermain.cpp

@@ -0,0 +1,17 @@
+#include "crashhandler.h"
+
+#include <QApplication>
+
+int main(int argc, char *argv[])
+{
+  if (argc < 2) {
+    return 1;
+  }
+
+  QApplication a(argc, argv);
+
+  CrashHandlerDialog chd(argv[1]);
+  chd.open();
+
+  return a.exec();
+}