/**
* Updates the contents of this cell editor, i.e. the value of gradientLabel with the given value.
* Parameter value is a string if this method is called when user selects the editor. Parameter
* value is GradientData if this method is called after user changed gradient (after opening
* GradientSelectionDialog from this cell editor)
*
* @see org.eclipse.jface.viewers.DialogCellEditor#updateContents(java.lang.Object)
*/
protected void updateContents(Object value) {
if (value == null) {
gradientLabel.setText(StringStatics.BLANK);
} else if (value instanceof String) {
gradientLabel.setText((String) value);
} else {
// format GradientData to string:
// RGB {x,x,x),RGB {x,x,x},style
// (the same as in NotationPropertyDescriptor.getPropertyValue())
GradientData gradient = (GradientData) value;
StringBuffer sf = new StringBuffer();
sf.append(FigureUtilities.integerToRGB(gradient.getGradientColor1()));
sf.append(',');
sf.append(FigureUtilities.integerToRGB(gradient.getGradientColor2()));
sf.append(',');
sf.append(GradientStyle.get(gradient.getGradientStyle()));
gradientLabel.setText(sf.toString());
}
}
/**
* Opens GradientSelectionDialog without transparency setting available, receives the return
* values and uses them to create the resulting GradientData object.
*
* @see org.eclipse.jface.viewers.DialogCellEditor#openDialogBox(org.eclipse.swt.widgets.Control)
*/
protected Object openDialogBox(Control cellEditorWindow) {
String value = (String) getValue();
RGB color1 = null, color2 = null;
int gradientStyle = -1;
// value is in format: RGB {x, x, x},RGB {x, x, x},style
// parse it
if (value != null) {
StringTokenizer st = new StringTokenizer(value, ",{}"); // $NON-NLS-1$
try {
int red, green, blue;
st.nextToken().trim(); // RGB string
// color1
red = Integer.parseInt(st.nextToken().trim());
green = Integer.parseInt(st.nextToken().trim());
blue = Integer.parseInt(st.nextToken().trim());
if (red > -1 && green > -1 && blue > -1) {
color1 = new RGB(red, green, blue);
}
st.nextToken().trim(); // RGB string
// color2
red = Integer.parseInt(st.nextToken().trim());
green = Integer.parseInt(st.nextToken().trim());
blue = Integer.parseInt(st.nextToken().trim());
if (red > -1 && green > -1 && blue > -1) {
color2 = new RGB(red, green, blue);
}
// style
GradientStyle gradientStyleObj =
GradientStyle.get(value.substring(value.lastIndexOf(',') + 1).trim());
if (gradientStyleObj != null) {
gradientStyle = gradientStyleObj.getValue();
}
} finally {
if (color1 == null || color2 == null || gradientStyle == -1) {
value = null;
}
}
}
if (value == null) {
// use default
GradientData def = GradientData.getDefaultGradientData();
color1 = FigureUtilities.integerToRGB(def.getGradientColor1());
color2 = FigureUtilities.integerToRGB(def.getGradientColor2());
gradientStyle = def.getGradientStyle();
}
GradientSelectionDialog dialog =
new GradientSelectionDialog(
cellEditorWindow.getShell(), SWT.APPLICATION_MODAL, color1, color2, gradientStyle, 0);
int result = dialog.open();
if (result == SWT.OK) {
return new GradientData(
FigureUtilities.RGBToInteger(dialog.getGradientColor1()),
FigureUtilities.RGBToInteger(dialog.getGradientColor2()),
dialog.getGradientStyle());
} else if (result == -1) { // user selected Clear button
// make the calls here, since parent ignores null, and we need to clear gradient
markDirty();
doSetValue(null);
fireApplyEditorValue();
}
return null;
}