Initial commit

Lts/Common/LtsWidgets/lts_message_dialog.cpp

@@ -0,0 +1,133 @@
+#include "lts_message_dialog.h"
+#include "lts_message_dialog_helper.h"
+
+#include <QCoreApplication>
+#include <QVBoxLayout>
+#include <QLabel>
+#include <QPushButton>
+#include <QDebug>
+
+
+namespace LtsWidgets
+{
+namespace LtsMessageDialog
+{
+Button showMessage(QWidget* parent,
+                   const QString& message,
+                   const QString &title,
+                   const Behaviour behaviour,
+                   const Buttons buttons,
+                   const QHash<Button, QString> &buttonTexts)
+{
+  static QAtomicInt s_used = 0;
+
+  if (s_used)
+    qDebug() << "LtsMessageDialog: showMessage called while showMessage is in its Event Loop - do not open more than one Dialog at once !!";
+
+  s_used = 1;
+
+  LtsMessageDialogHelper *dialog = new LtsMessageDialogHelper(); // NOT 'parent' !
+  Button result = dialog->showMessage(parent, message, title, behaviour, buttons, buttonTexts);
+  dialog->deleteLater();
+
+  s_used = 0;
+
+  return result;
+}
+
+Button askApplyDiscardCancel(QWidget *parent)
+{
+  const QString question = QCoreApplication::translate("LtsDialog",
+                                                       "<br>"
+                                                       "Apply - apply changes and close.<br>"
+                                                       "Discard - discard changes and close.<br>"
+                                                       "Cancel - do not close.");
+  const QString title = QCoreApplication::translate("LtsDialog", "Unapplied changes made. Apply the changes?");
+  return LtsMessageDialog::showMessage(parent,
+                                       question,
+                                       title,
+                                       Behaviour::Modal,
+                                       Button::Apply | Button::Discard | Button::Cancel);
+}
+
+
+} // namespace LtsMessageDialog
+
+
+
+// LtsWidgets
+LtsMessageDialogNew::LtsMessageDialogNew(QWidget *parent, const QString &message, const QString &title, const Behaviour behaviour, const Buttons buttons, const QHash<Button, QString> &buttonTexts, bool deleteOnClose)
+{
+  m_dialog = new LtsFramelessDialog(parent, behaviour);
+
+  if (deleteOnClose)
+    m_dialog->setAttribute(Qt::WA_DeleteOnClose); // Message Dialogs are loose instances that must delete theirselves, because noone keeps a pointer to the message dialog
+
+  connect(m_dialog, &LtsFramelessDialog::destroyed,
+          this, &LtsMessageDialogNew::deleteLater);
+
+  QVBoxLayout *mainLayout = new QVBoxLayout(m_dialog);
+
+  QString text;
+  if (!title.isEmpty()) // title given?
+  {
+    text = QStringLiteral("<b>%1</b><br><br>").arg(title);
+  }
+
+  text += message;
+
+  QLabel *messageLabel = new QLabel(text, m_dialog);
+  messageLabel->setTextInteractionFlags(Qt::TextSelectableByMouse); // make text selectable by mouse
+  mainLayout->addWidget(messageLabel);
+
+  QHBoxLayout *buttonLayout = new QHBoxLayout;
+  buttonLayout->setMargin(0);
+
+  // TODO: FIXME: can this be called after the selection was made and the shadow just dies ?
+  //connect(m_dialog, &LtsFramelessDialog::rejected, this, &LtsMessageDialogHelper::slotCancel); // respect that non-modal dialogs can be closed by clicking outside of it
+
+  if (buttons.testFlag(Button::Ok))
+    connect(addButton(buttonTexts.value(Button::Ok, tr("Ok")), buttonLayout, m_dialog, Button::Ok, parent), &QPushButton::clicked, this, &LtsMessageDialogNew::ok);
+
+  if (buttons.testFlag(Button::Yes))
+    connect(addButton(buttonTexts.value(Button::Yes, tr("Yes")), buttonLayout, m_dialog, Button::Yes, parent), &QPushButton::clicked, this, &LtsMessageDialogNew::yes);
+
+  if (buttons.testFlag(Button::No))
+    connect(addButton(buttonTexts.value(Button::No, tr("No")), buttonLayout, m_dialog, Button::No, parent), &QPushButton::clicked, this, &LtsMessageDialogNew::no);
+
+  if (buttons.testFlag(Button::Apply))
+    connect(addButton(buttonTexts.value(Button::Apply, tr("Apply")), buttonLayout, m_dialog, Button::Apply, parent), &QPushButton::clicked, this, &LtsMessageDialogNew::apply); // same as yes
+
+  if (buttons.testFlag(Button::Discard))
+    connect(addButton(buttonTexts.value(Button::Discard, tr("Discard")), buttonLayout, m_dialog, Button::Discard, parent), &QPushButton::clicked, this, &LtsMessageDialogNew::discard); // same as no
+
+  if (buttons.testFlag(Button::Cancel))
+    connect(addButton(buttonTexts.value(Button::Cancel, tr("Cancel")), buttonLayout, m_dialog, Button::Cancel, parent), &QPushButton::clicked, this, &LtsMessageDialogNew::cancel);
+
+  QWidget *buttonLayoutWidget = new QWidget;
+  buttonLayoutWidget->setLayout(buttonLayout);
+
+  mainLayout->addWidget(buttonLayoutWidget);
+
+  m_dialog->show();
+  m_dialog->raise();
+}
+
+
+QPushButton* LtsMessageDialogNew::addButton(const QString &text, QHBoxLayout *thatLayout, LtsFramelessDialog *dialog, const Button &button, QWidget *parent)
+{
+  QPushButton* btn = new QPushButton(text, parent);
+  connect(btn, &QPushButton::clicked, dialog, &LtsFramelessDialog::accept);
+  thatLayout->addWidget(btn);
+
+  if (button == Button::Ok ||
+      button == Button::Cancel) // ok and cancel should not be used together, so there is no check needed (as only one button can be the default button)
+  {
+    btn->setDefault(true);
+  }
+
+  return btn;
+}
+
+
+} // namespace LtsWidgets