+/**
+ * \file FormDialogView.C
+ * This file is part of LyX, the document processor.
+ * Licence details can be found in the file COPYING.
+ *
+ * \author Angus Leeming
+ *
+ * Full author contact details are available in file CREDITS
+ */
+
+#include <config.h>
+
+
+#include "FormDialogView.h"
+
+#include "Dialog.h"
+#include "xformsBC.h"
+#include "xforms_resize.h"
+#include "Tooltips.h"
+#include "xforms_helpers.h" // formatted
+
+#include "gettext.h" // _()
+#include "lyxrc.h"
+#include "BoostFormat.h"
+
+#include "support/LAssert.h"
+#include "support/filetools.h" // LibFileSearch
+
+#include FORMS_H_LOCATION
+
+extern "C" {
+
+// These should be in forms.h but aren't
+void fl_show_tooltip(const char *, int, int);
+
+void fl_hide_tooltip();
+
+// Callback function invoked by xforms when the dialog is closed by the
+// window manager.
+static int C_WMHideCB(FL_FORM * form, void *);
+
+// Callback function invoked by the xforms pre-handler routine.
+static int C_PrehandlerCB(FL_OBJECT *, int, FL_Coord, FL_Coord, int, void *);
+
+} // extern "C"
+
+
+FormDialogView::FormDialogView(Dialog & parent,
+ string const & t, bool allowResize)
+ : Dialog::View(parent),
+ warning_posted_(false), message_widget_(0),
+ minw_(0), minh_(0), allow_resize_(allowResize),
+ title_(t), icon_pixmap_(0), icon_mask_(0),
+ tooltips_(new Tooltips())
+{}
+
+
+FormDialogView::~FormDialogView()
+{
+ if (icon_pixmap_)
+ XFreePixmap(fl_get_display(), icon_pixmap_);
+
+ delete tooltips_;
+}
+
+
+bool FormDialogView::isVisible() const
+{
+ return form() && form()->visible;
+}
+
+
+Tooltips & FormDialogView::tooltips()
+{
+ return *tooltips_;
+}
+
+
+void FormDialogView::redraw()
+{
+ if (form() && form()->visible)
+ fl_redraw_form(form());
+}
+
+
+xformsBC & FormDialogView::bc()
+{
+ return static_cast<xformsBC &>(dialog().bc());
+}
+
+
+void FormDialogView::prepare_to_show()
+{
+ double const scale = get_scale_to_fit(form());
+ if (scale > 1.001)
+ scale_form_horizontally(form(), scale);
+
+ // work around dumb xforms sizing bug
+ minw_ = form()->w;
+ minh_ = form()->h;
+
+ fl_set_form_atclose(form(), C_WMHideCB, 0);
+
+ // set the title for the minimized form
+ if (!lyxrc.dialogs_iconify_with_main)
+ fl_winicontitle(form()->window, title_.c_str());
+
+ // assign an icon to the form
+ string const iconname = LibFileSearch("images", "lyx", "xpm");
+ if (!iconname.empty()) {
+ unsigned int w, h;
+ icon_pixmap_ = fl_read_pixmapfile(fl_root,
+ iconname.c_str(),
+ &w,
+ &h,
+ &icon_mask_,
+ 0, 0, 0);
+ fl_set_form_icon(form(), icon_pixmap_, icon_mask_);
+ }
+}
+
+
+void FormDialogView::show()
+{
+ if (!form()) {
+ build();
+ }
+
+ // we use minw_ to flag whether the dialog has ever been shown.
+ // In turn, prepare_to_show() initialises various bits 'n' pieces
+ // (including minw_).
+ if (minw_ == 0) {
+ prepare_to_show();
+ }
+
+ // make sure the form is up to date.
+ fl_freeze_form(form());
+ update();
+ fl_unfreeze_form(form());
+
+ if (form()->visible) {
+ fl_raise_form(form());
+ /* This XMapWindow() will hopefully ensure that
+ * iconified dialogs are de-iconified. Mad props
+ * out to those crazy Xlib guys for forgetting a
+ * XDeiconifyWindow(). At least WindowMaker, when
+ * being notified of the redirected MapRequest will
+ * specifically de-iconify. From source, fvwm2 seems
+ * to do the same.
+ */
+ XMapWindow(fl_get_display(), form()->window);
+ } else {
+ // calls to fl_set_form_minsize/maxsize apply only to the next
+ // fl_show_form(), so this comes first.
+ fl_set_form_minsize(form(), minw_, minh_);
+ if (!allow_resize_)
+ fl_set_form_maxsize(form(), minw_, minh_);
+
+ string const maximize_title = "LyX: " + title_;
+ int const iconify_policy = lyxrc.dialogs_iconify_with_main ?
+ FL_TRANSIENT : 0;
+
+ fl_show_form(form(),
+ FL_PLACE_MOUSE | FL_FREE_SIZE,
+ iconify_policy,
+ maximize_title.c_str());
+ }
+}
+
+
+void FormDialogView::hide()
+{
+#if FL_VERSION < 1
+ // Does no harm if none is visible and ensures that the tooltip form
+ // is hidden should the dialog be closed from the keyboard.
+ fl_hide_tooltip();
+#endif
+
+ // xforms sometimes tries to process a hint-type MotionNotify, and
+ // use XQueryPointer, without verifying if the window still exists.
+ // So we try to clear out motion events in the queue before the
+ // DestroyNotify
+ XSync(fl_get_display(), false);
+
+ if (form() && form()->visible)
+ fl_hide_form(form());
+}
+
+
+void FormDialogView::setPrehandler(FL_OBJECT * ob)
+{
+ lyx::Assert(ob);
+ fl_set_object_prehandler(ob, C_PrehandlerCB);
+}
+
+
+void FormDialogView::setMessageWidget(FL_OBJECT * ob)
+{
+ lyx::Assert(ob && ob->objclass == FL_TEXT);
+ message_widget_ = ob;
+ fl_set_object_lsize(message_widget_, FL_NORMAL_SIZE);
+}
+
+
+void FormDialogView::InputCB(FL_OBJECT * ob, long data)
+{
+ // It is possible to set the choice to 0 when using the
+ // keyboard shortcuts. This work-around deals with the problem.
+ if (ob && ob->objclass == FL_CHOICE && fl_get_choice(ob) < 1) {
+ fl_set_choice(ob, 1);
+ }
+
+ bc().input(input(ob, data));
+}
+
+
+ButtonPolicy::SMInput FormDialogView::input(FL_OBJECT *, long)
+{
+ return ButtonPolicy::SMI_VALID;
+}
+
+
+// preemptive handler for feedback messages
+void FormDialogView::MessageCB(FL_OBJECT * ob, int event)
+{
+ lyx::Assert(ob);
+
+ switch (event) {
+ case FL_ENTER:
+ {
+ string const feedback = getFeedback(ob);
+ if (feedback.empty() && warning_posted_)
+ break;
+
+ warning_posted_ = false;
+ postMessage(getFeedback(ob));
+ break;
+ }
+
+ case FL_LEAVE:
+ if (!warning_posted_)
+ clearMessage();
+ break;
+
+ default:
+ break;
+ }
+}
+
+
+void FormDialogView::PrehandlerCB(FL_OBJECT * ob, int event, int key)
+{
+ lyx::Assert(ob);
+
+ if (ob->objclass == FL_INPUT && event == FL_PUSH && key == 2) {
+ // Trigger an input event when pasting in an xforms input
+ // object using the middle mouse button.
+ InputCB(ob, 0);
+ return;
+ }
+
+ switch (event) {
+ case FL_ENTER:
+ case FL_LEAVE:
+ if (message_widget_) {
+ // Post feedback as the mouse enters the object,
+ // remove it as the mouse leaves.
+ MessageCB(ob, event);
+ }
+
+#if FL_VERSION < 1
+ if (ob->objclass == FL_TABFOLDER) {
+ // This prehandler is used to work-around an xforms
+ // bug and ensures that the form->x, form->y coords of
+ // the active tabfolder are up to date.
+
+ // The tabfolder itself can be very narrow, being just
+ // the visible border to the tabs.
+ // We thus use both FL_ENTER and FL_LEAVE as flags,
+ // in case the FL_ENTER event is not caught.
+
+ FL_FORM * const folder = fl_get_active_folder(ob);
+ if (folder && folder->window) {
+ fl_get_winorigin(folder->window,
+ &(folder->x), &(folder->y));
+ }
+ }
+#endif
+ break;
+ }
+
+ // Tooltips are not displayed on browser widgets due to an xforms' bug.
+ // I have a fix, but it's not yet in the xforms sources.
+ // This is a work-around:
+ switch (event) {
+ case FL_ENTER:
+ if (ob->objclass == FL_BROWSER &&
+ ob->tooltip && *(ob->tooltip)) {
+ int const x = ob->form->x + ob->x;
+ int const y = ob->form->y + ob->y + ob->h + 1;
+ fl_show_tooltip(ob->tooltip, x, y);
+ }
+ break;
+ case FL_LEAVE:
+ case FL_PUSH:
+ case FL_KEYPRESS:
+ if (ob->objclass == FL_BROWSER)
+ fl_hide_tooltip();
+ break;
+ }
+}
+
+
+void FormDialogView::postWarning(string const & warning)
+{
+ warning_posted_ = true;
+ postMessage(warning);
+}
+
+
+void FormDialogView::clearMessage()
+{
+ lyx::Assert(message_widget_);
+
+ warning_posted_ = false;
+
+ string const existing = message_widget_->label
+ ? message_widget_->label : string();
+ if (existing.empty())
+ return;
+
+ // This trick is needed to get xforms to clear the label...
+ fl_set_object_label(message_widget_, "");
+ fl_hide_object(message_widget_);
+}
+
+
+void FormDialogView::postMessage(string const & message)
+{
+ lyx::Assert(message_widget_);
+
+ int const width = message_widget_->w - 10;
+#if USE_BOOST_FORMAT
+ boost::format fmter = warning_posted_ ?
+ boost::format(_("WARNING! %1$s")) :
+ boost::format("%1$s");
+
+ string const str = formatted(boost::io::str(fmter % message),
+ width, FL_NORMAL_SIZE);
+#else
+ string const tmp = warning_posted_ ?
+ _("WARNING!") + string(" ") + message :
+ message;
+
+ string const str = formatted(tmp, width, FL_NORMAL_SIZE);
+#endif
+
+ fl_set_object_label(message_widget_, str.c_str());
+ FL_COLOR const label_color = warning_posted_ ? FL_RED : FL_LCOL;
+ fl_set_object_lcol(message_widget_, label_color);
+
+ if (!message_widget_->visible)
+ fl_show_object(message_widget_);
+}
+
+
+namespace {
+
+FormDialogView * GetForm(FL_OBJECT * ob)
+{
+ lyx::Assert(ob && ob->form && ob->form->u_vdata);
+ FormDialogView * ptr =
+ static_cast<FormDialogView *>(ob->form->u_vdata);
+ return ptr;
+}
+
+} // namespace anon
+
+
+extern "C" {
+
+void C_FormDialogView_ApplyCB(FL_OBJECT * ob, long)
+{
+ GetForm(ob)->dialog().ApplyButton();
+}
+
+
+void C_FormDialogView_OKCB(FL_OBJECT * ob, long)
+{
+ GetForm(ob)->dialog().OKButton();
+}
+
+
+void C_FormDialogView_CancelCB(FL_OBJECT * ob, long)
+{
+ FormDialogView * form = GetForm(ob);
+ form->dialog().CancelButton();
+}
+
+
+void C_FormDialogView_RestoreCB(FL_OBJECT * ob, long)
+{
+ GetForm(ob)->dialog().RestoreButton();
+}
+
+
+void C_FormDialogView_InputCB(FL_OBJECT * ob, long d)
+{
+ GetForm(ob)->InputCB(ob, d);
+}
+
+
+static int C_WMHideCB(FL_FORM * form, void *)
+{
+ // Close the dialog cleanly, even if the WM is used to do so.
+ lyx::Assert(form && form->u_vdata);
+ FormDialogView * ptr = static_cast<FormDialogView *>(form->u_vdata);
+ ptr->dialog().CancelButton();
+ return FL_CANCEL;
+}
+
+static int C_PrehandlerCB(FL_OBJECT * ob, int event,
+ FL_Coord, FL_Coord, int key, void *)
+{
+ // Note that the return value is important in the pre-emptive handler.
+ // Don't return anything other than 0.
+ lyx::Assert(ob);
+
+ // Don't Assert this one, as it can happen quite naturally when things
+ // are being deleted in the d-tor.
+ //Assert(ob->form);
+ if (!ob->form) return 0;
+
+ FormDialogView * ptr =
+ static_cast<FormDialogView *>(ob->form->u_vdata);
+
+ if (ptr)
+ ptr->PrehandlerCB(ob, event, key);
+
+ return 0;
+}
+
+} // extern "C"
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