add otk::MessageDialog

1 files changed, 168 insertions, 0 deletions

diff --git a/otk/messagedialog.cc b/otk/messagedialog.cc
new file mode 100644
index 00000000..df004347
--- /dev/null
+++ b/otk/messagedialog.cc
@@ -0,0 +1,168 @@
+// -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
+
+#include "config.h"
+
+#include "messagedialog.hh"
+#include "assassin.hh"
+#include "button.hh"
+#include "label.hh"
+#include "display.hh"
+#include "property.hh"
+#include "eventdispatcher.hh"
+#include "timer.hh"
+
+#include <algorithm>
+
+namespace otk {
+
+DialogButton MessageDialog::_default_result("", false);
+
+class DialogButtonWidget : public Button {
+  MessageDialog *_dia;
+  const DialogButton &_res;
+public:
+  DialogButtonWidget(Widget *parent, MessageDialog *dia,
+		     const DialogButton &b)
+    : Button(parent),
+      _dia(dia),
+      _res(b)
+  {
+    assert(dia);
+    setBevel(1);
+    setMaxSize(Size(0,0));
+    setText(b.label());
+    setHighlighted(b.isDefault());
+    show();
+  }
+
+  virtual void buttonPressHandler(const XButtonEvent &e) {
+    // limit to the left button
+    if (e.button == Button1)
+      Button::buttonPressHandler(e);
+  }
+  virtual void clickHandler(unsigned int) {
+    _dia->setResult(_res);
+    _dia->hide();
+  }
+};
+
+MessageDialog::MessageDialog(int screen, EventDispatcher *ed, ustring title,
+			     ustring caption)
+  : Widget(screen, ed, Widget::Vertical)
+{
+  init(title, caption);
+}
+
+MessageDialog::MessageDialog(EventDispatcher *ed, ustring title,
+			     ustring caption)
+  : Widget(DefaultScreen(**display), ed, Widget::Vertical)
+{
+  init(title, caption);
+}
+
+MessageDialog::MessageDialog(Widget *parent, ustring title, ustring caption)
+  : Widget(parent, Widget::Vertical)
+{
+  init(title, caption);
+}
+
+void MessageDialog::init(const ustring &title, const ustring &caption)
+{
+  _label = new Label(this);
+  _label->show();
+  _label->setHighlighted(true);
+  _button_holder = new Widget(this, Widget::Horizontal);
+  _button_holder->show();
+  _return = XKeysymToKeycode(**display, XStringToKeysym("Return"));
+  _escape = XKeysymToKeycode(**display, XStringToKeysym("Escape"));
+  _result = &_default_result;
+
+  setEventMask(eventMask() | KeyPressMask);
+  _label->setText(caption);
+  if (title.utf8())
+    otk::Property::set(window(), otk::Property::atoms.net_wm_name,
+		       otk::Property::utf8, title);
+  otk::Property::set(window(), otk::Property::atoms.wm_name,
+		     otk::Property::ascii, otk::ustring(title.c_str(), false));
+
+  // set WM Protocols on the window
+  Atom protocols[2];
+  protocols[0] = Property::atoms.wm_protocols;
+  protocols[1] = Property::atoms.wm_delete_window;
+  XSetWMProtocols(**display, window(), protocols, 2);
+}
+
+MessageDialog::~MessageDialog()
+{
+  if (visible()) hide();
+  delete _button_holder;
+  delete _label;
+}
+
+const DialogButton& MessageDialog::run()
+{
+  show();
+
+  while (visible()) {
+    dispatcher()->dispatchEvents();
+    if (visible())
+      Timer::dispatchTimers(); // fire pending events
+  }
+  return *_result;
+}
+
+void MessageDialog::show()
+{
+  std::vector<DialogButton>::const_iterator it, end = _buttons.end();
+  for (it = _buttons.begin(); it != end; ++it)
+    _button_widgets.push_back(new DialogButtonWidget(_button_holder,
+						     this, *it));
+
+  XSizeHints size;
+  size.flags = PMinSize;
+  size.min_width = minSize().width();
+  size.min_height = minSize().height();
+  XSetWMNormalHints(**display, window(), &size);
+
+  Size dest = area().size();
+  if (dest.width() < 200 || dest.height() < 100) {
+    if (dest.width() < 200 && dest.height() < 100) dest = Size(200, 100);
+    else if (dest.width() < 200) dest = Size(200, dest.height());
+    else dest = Size(dest.width(), 100);
+    resize(dest);
+  }
+
+  Widget::show();
+}
+
+void MessageDialog::hide()
+{
+  Widget::hide();
+  std::for_each(_button_widgets.begin(), _button_widgets.end(),
+		PointerAssassin());
+}
+
+void MessageDialog::keyPressHandler(const XKeyEvent &e)
+{
+  if (e.keycode == _return) {
+    std::vector<DialogButton>::const_iterator it, end = _buttons.end();
+    for (it = _buttons.begin(); it != end; ++it)
+      if (it->isDefault()) {
+	_result = &(*it);
+	break;
+      }
+    hide();
+  } else if (e.keycode == _escape) {
+    hide();
+  }
+}
+
+void MessageDialog::clientMessageHandler(const XClientMessageEvent &e)
+{
+  EventHandler::clientMessageHandler(e);
+  if (e.message_type == Property::atoms.wm_protocols &&
+      static_cast<Atom>(e.data.l[0]) == Property::atoms.wm_delete_window)
+    hide();
+}
+
+}