Examples with DragAndDropContainer org.pentaho.di.core.dnd.DragAndDropContainer used on opensource projects

Example 1 with DragAndDropContainer

use of org.pentaho.di.core.dnd.DragAndDropContainer in project pentaho-kettle by pentaho.

the class SpoonTreeDelegate method addDragSourceToTree.

public void addDragSourceToTree(final Tree tree, final Tree selectionTree, final Tree coreObjectsTree) {
    // Drag & Drop for steps
    Transfer[] ttypes = new Transfer[] { XMLTransfer.getInstance() };
    DragSource ddSource = new DragSource(tree, DND.DROP_MOVE);
    ddSource.setTransfer(ttypes);
    ddSource.addDragListener(new DragSourceListener() {

        public void dragStart(DragSourceEvent event) {
            TreeSelection[] treeObjects = getTreeObjects(tree, selectionTree, coreObjectsTree);
            if (treeObjects.length == 0) {
                event.doit = false;
                return;
            }
            spoon.hideToolTips();
            TreeSelection treeObject = treeObjects[0];
            Object object = treeObject.getSelection();
            TransMeta transMeta = spoon.getActiveTransformation();
            if (object instanceof StepMeta || object instanceof PluginInterface || (object instanceof DatabaseMeta && transMeta != null) || object instanceof TransHopMeta || object instanceof JobEntryCopy) {
                event.doit = true;
            } else {
                event.doit = false;
            }
        }

        public void dragSetData(DragSourceEvent event) {
            TreeSelection[] treeObjects = getTreeObjects(tree, selectionTree, coreObjectsTree);
            if (treeObjects.length == 0) {
                event.doit = false;
                return;
            }
            int type = 0;
            String id = null;
            String data = null;
            TreeSelection treeObject = treeObjects[0];
            Object object = treeObject.getSelection();
            if (object instanceof StepMeta) {
                StepMeta stepMeta = (StepMeta) object;
                type = DragAndDropContainer.TYPE_STEP;
                // name of the step.
                data = stepMeta.getName();
            } else if (object instanceof PluginInterface) {
                PluginInterface plugin = (PluginInterface) object;
                Class<? extends PluginTypeInterface> pluginType = plugin.getPluginType();
                if (Const.classIsOrExtends(pluginType, StepPluginType.class)) {
                    type = DragAndDropContainer.TYPE_BASE_STEP_TYPE;
                    id = plugin.getIds()[0];
                    // Step type name
                    data = plugin.getName();
                } else {
                    type = DragAndDropContainer.TYPE_BASE_JOB_ENTRY;
                    // job entry type name
                    data = plugin.getName();
                    if (treeObject.getItemText().equals(JobMeta.createStartEntry().getName())) {
                        data = treeObject.getItemText();
                    } else if (treeObject.getItemText().equals(JobMeta.createDummyEntry().getName())) {
                        data = treeObject.getItemText();
                    }
                }
            } else if (object instanceof DatabaseMeta) {
                DatabaseMeta databaseMeta = (DatabaseMeta) object;
                type = DragAndDropContainer.TYPE_DATABASE_CONNECTION;
                data = databaseMeta.getName();
            } else if (object instanceof TransHopMeta) {
                TransHopMeta hop = (TransHopMeta) object;
                type = DragAndDropContainer.TYPE_TRANS_HOP;
                // nothing for really ;-)
                data = hop.toString();
            } else if (object instanceof JobEntryCopy) {
                JobEntryCopy jobEntryCopy = (JobEntryCopy) object;
                type = DragAndDropContainer.TYPE_JOB_ENTRY;
                // name of the job entry.
                data = jobEntryCopy.getName();
            } else {
                event.doit = false;
                // ignore anything else you drag.
                return;
            }
            event.data = new DragAndDropContainer(type, data, id);
        }

        public void dragFinished(DragSourceEvent event) {
        }
    });
}