// Do not allow the one and only layer to be deleted.
protected void updateLayerAttributesState() {
int numberOfDeletableLayers = 0;
for (int i = 0; i < editor.getNumberOfLayers(); ++i) {
MiPart layer = editor.getLayer(i);
MiLayerAttributes layerAttributes =
(MiLayerAttributes)
layer.getResource(MiLayerAttributes.Mi_LAYER_ATTRIBUTES_RESOURCE_NAME);
if ((layerAttributes != null)
&& (layerAttributes.getEditability() != MiLayerAttributes.Mi_LAYER_NEVER_EDITABLE)) {
++numberOfDeletableLayers;
}
}
boolean deletable = numberOfDeletableLayers > 1;
for (int i = 0; i < editor.getNumberOfLayers(); ++i) {
MiPart layer = editor.getLayer(i);
MiLayerAttributes layerAttributes =
(MiLayerAttributes)
layer.getResource(MiLayerAttributes.Mi_LAYER_ATTRIBUTES_RESOURCE_NAME);
if (layerAttributes != null) {
layerAttributes.setDeletable(deletable);
layerAttributes.updateCommandManagerState();
}
}
}
/**
* ------------------------------------------------------ Sets whether the order of the MiParts in
* the layers are kept such that MiConnections are at the begining of the list. This is useful
* when and one does not want connections to be drawn in front of the nodes.
*
* @param flag true if connections to be drawn first
* @see MiConnection#setTruncateLineAtEndPointPartBoundries
* @see MiContainer#setKeepConnectionsBelowNodes
* @see #getKeepConnectionsBelowNodes ------------------------------------------------------
*/
public void setKeepConnectionsBelowNodes(boolean flag) {
keepConnectionsBelowNodes = flag;
for (int i = 0; i < editor.getNumberOfLayers(); ++i) {
if (editor.getLayer(i) instanceof MiContainer) {
((MiContainer) editor.getLayer(i)).setKeepConnectionsBelowNodes(flag);
}
}
}
public MiLayerManager(MiEditor editor) {
this.editor = editor;
editor.setHasLayers(true);
for (int i = 0; i < editor.getNumberOfLayers(); ++i) {
MiPart layer = editor.getLayer(i);
MiLayerAttributes layerAttributes = new MiLayerAttributes(layer);
appendModelEntity(layerAttributes);
}
editor.appendActionHandler(this, Mi_EDITOR_LAYER_ADDED_ACTION);
editor.appendActionHandler(this, Mi_EDITOR_LAYER_REMOVED_ACTION);
editor.appendActionHandler(this, Mi_EDITOR_LAYER_ORDER_CHANGED_ACTION);
editor.appendActionHandler(this, Mi_EDITOR_CURRENT_LAYER_CHANGED_ACTION);
}
public boolean processAction(MiiAction action) {
MiPart layer = (MiPart) action.getActionSystemInfo();
if (action.hasActionType(Mi_EDITOR_LAYER_ADDED_ACTION)) {
appendModelEntity(new MiLayerAttributes(layer));
updateLayerAttributesState();
} else if (action.hasActionType(Mi_EDITOR_LAYER_REMOVED_ACTION)) {
MiLayerAttributes layerAttributes =
(MiLayerAttributes)
layer.getResource(MiLayerAttributes.Mi_LAYER_ATTRIBUTES_RESOURCE_NAME);
if (layerAttributes != null) {
removeModelEntity(layerAttributes);
}
updateLayerAttributesState();
} else if (action.hasActionType(Mi_EDITOR_LAYER_ORDER_CHANGED_ACTION)) {
removeAllModelEntities();
for (int i = 0; i < editor.getNumberOfLayers(); ++i) {
layer = editor.getLayer(i);
MiLayerAttributes layerAttributes =
(MiLayerAttributes)
layer.getResource(MiLayerAttributes.Mi_LAYER_ATTRIBUTES_RESOURCE_NAME);
if (layerAttributes == null) {
layerAttributes = new MiLayerAttributes(layer);
}
appendModelEntity(layerAttributes);
}
updateLayerAttributesState();
} else if (action.hasActionType(Mi_EDITOR_CURRENT_LAYER_CHANGED_ACTION)) {
MiPart currentLayer = editor.getCurrentLayer();
MiModelEntityList list = getModelEntities();
for (int i = 0; i < list.size(); ++i) {
MiLayerAttributes atts = (MiLayerAttributes) list.elementAt(i);
if (atts.getLayer() == currentLayer) atts.setCurrent(true);
else if (atts.isCurrent()) atts.setCurrent(false);
}
updateLayerAttributesState();
}
return (true);
}
public MiLayerAttributes getLayerAttributes(int index) {
MiPart layer = editor.getLayer(index);
return ((MiLayerAttributes)
layer.getResource(MiLayerAttributes.Mi_LAYER_ATTRIBUTES_RESOURCE_NAME));
}
