/**
* Construct a new button that can be used to toggle between black and white.
*
* @param appState Reference to the model, used to change drawing colour.
* @param identifier Identifier for this object.
*/
public ToggleColourButton(ApplicationState appState, String identifier) {
super();
this.as = appState;
this.identifier = identifier;
this.fgCol = Colour.BLACK;
this.bgCol = Colour.WHITE;
addPressHandler(this);
// Set class of button element
setStyleName(STYLENAME);
// Create element that shows foreground colour, set it up and add it
fgColEl = DivElement.as(DOM.createElement("div"));
fgColEl.setPropertyString("className", STYLENAME_FG_EL);
fgColEl.getStyle().setBackgroundColor(fgCol.toString());
getElement().appendChild(fgColEl);
// Create element that shows background colour, set it up and add it
bgColEl = DivElement.as(DOM.createElement("div"));
bgColEl.setPropertyString("className", STYLENAME_BG_EL);
bgColEl.getStyle().setBackgroundColor(bgCol.toString());
getElement().appendChild(bgColEl);
// Set the debug ID for the toggle colour button.
ensureDebugId("toggleColor");
}
