Examples with PVWidget org.csstudio.display.builder.model.widgets.PVWidget used on opensource projects

Example 1 with PVWidget

use of org.csstudio.display.builder.model.widgets.PVWidget in project org.csstudio.display.builder by kasemir.

the class WidgetTransfer method installWidgetsFromString.

private static void installWidgetsFromString(final DragEvent event, final String text, final SelectedWidgetUITracker selection_tracker, final List<Widget> widgets) {
    // Consider each word a separate PV
    final String[] words = text.split("[ \n]+");
    final boolean multiple = words.length > 1;
    final List<WidgetDescriptor> descriptors = getPVWidgetDescriptors();
    final List<String> choices = new ArrayList<>(descriptors.size() + (multiple ? 1 : 0));
    final String format = multiple ? Messages.WT_FromString_multipleFMT : Messages.WT_FromString_singleFMT;
    // Always offer a single LabelWidget for the complete text
    final String defaultChoice = NLS.bind(Messages.WT_FromString_singleFMT, LabelWidget.WIDGET_DESCRIPTOR.getName());
    choices.add(defaultChoice);
    // When multiple words were dropped, offer multiple label widgets
    if (multiple) {
        choices.add(NLS.bind(Messages.WT_FromString_multipleFMT, LabelWidget.WIDGET_DESCRIPTOR.getName()));
    }
    choices.addAll(descriptors.stream().map(d -> NLS.bind(format, d.getName())).collect(Collectors.toList()));
    Collections.sort(choices);
    final ChoiceDialog<String> dialog = new ChoiceDialog<>(defaultChoice, choices);
    dialog.setX(event.getScreenX() - 100);
    dialog.setY(event.getScreenY() - 200);
    dialog.setTitle(Messages.WT_FromString_dialog_title);
    dialog.setHeaderText(NLS.bind(Messages.WT_FromString_dialog_headerFMT, reduceStrings(words)));
    dialog.setContentText(Messages.WT_FromString_dialog_content);
    final Optional<String> result = dialog.showAndWait();
    if (!result.isPresent()) {
        return;
    }
    final String choice = result.get();
    if (defaultChoice.equals(choice)) {
        logger.log(Level.FINE, "Dropped text: created LabelWidget [{0}].", text);
        // Not a valid XML. Instantiate a Label object.
        final LabelWidget widget = (LabelWidget) LabelWidget.WIDGET_DESCRIPTOR.createWidget();
        widget.propText().setValue(text);
        widgets.add(widget);
    } else {
        // Parse selection back into widget descriptor
        final MessageFormat msgf = new MessageFormat(format);
        final String descriptorName;
        try {
            descriptorName = msgf.parse(choice)[0].toString();
        } catch (Exception ex) {
            logger.log(Level.SEVERE, "Cannot parse selected widget type " + choice, ex);
            return;
        }
        WidgetDescriptor descriptor = null;
        if (LabelWidget.WIDGET_DESCRIPTOR.getName().equals(descriptorName)) {
            descriptor = LabelWidget.WIDGET_DESCRIPTOR;
        } else {
            descriptor = descriptors.stream().filter(d -> descriptorName.equals(d.getName())).findFirst().orElse(null);
        }
        if (descriptor == null) {
            logger.log(Level.SEVERE, "Cannot obtain widget for " + descriptorName);
            return;
        }
        for (String word : words) {
            final Widget widget = descriptor.createWidget();
            logger.log(Level.FINE, "Dropped text: created {0} [{1}].", new Object[] { widget.getClass().getSimpleName(), word });
            if (widget instanceof PVWidget) {
                ((PVWidget) widget).propPVName().setValue(word);
            } else if (widget instanceof LabelWidget) {
                ((LabelWidget) widget).propText().setValue(word);
            } else {
                logger.log(Level.WARNING, "Unexpected widget type [{0}].", widget.getClass().getSimpleName());
            }
            final int index = widgets.size();
            if (index > 0) {
                // Place widgets below each other
                final Widget previous = widgets.get(index - 1);
                int x = previous.propX().getValue();
                int y = previous.propY().getValue() + previous.propHeight().getValue();
                // Align (if enabled)
                final Point2D pos = selection_tracker.gridConstrain(x, y);
                widget.propX().setValue((int) pos.getX());
                widget.propY().setValue((int) pos.getY());
            }
            widgets.add(widget);
        }
    }
}