// A TextualZoomControl is a GControl that displays textual "Zoom In"
// and "Zoom Out" buttons (as opposed to the iconic buttons used in
// Google Maps).

// We define the function first
function ShowAllControl() {
	this.showBounds = null;
}

// To "subclass" the GControl, we set the prototype object to
// an instance of the GControl object
ShowAllControl.prototype = new GControl();

// Creates a one DIV for each of the buttons and places them in a container
// DIV which is returned as our control element. We add the control to
// to the map container and return the element for the map class to
// position properly.
ShowAllControl.prototype.initialize = function(map) {
  var container = document.createElement("div");

  var zoomAllDiv = document.createElement("div");
  this.setButtonStyle_(zoomAllDiv);
  container.appendChild(zoomAllDiv);
  zoomAllDiv.appendChild(document.createTextNode("Show All"));
  zoomAllDiv.host = this;
  GEvent.addDomListener(zoomAllDiv, "click", function() {
    this.host.showBounds();
  });

  map.getContainer().appendChild(container);
  return container;
}

// By default, the control will appear in the top left corner of the
// map with 7 pixels of padding.
ShowAllControl.prototype.getDefaultPosition = function() {
  return new GControlPosition(G_ANCHOR_TOP_RIGHT, new GSize(7, 7));
}

// Sets the proper CSS for the given button element.
ShowAllControl.prototype.setButtonStyle_ = function(button) {
  button.style.textDecoration = "none";
  button.style.color = "#000000";
  button.style.backgroundColor = "white";
  button.style.font = "75% Arial";
  button.style.border = "1px solid black";
  button.style.padding = "2px";
  button.style.marginBottom = "3px";
  button.style.textAlign = "center";
  button.style.width = "6em";
  button.style.cursor = "pointer";
  button.style.marginTop = "22px";
}