diff options
Diffstat (limited to 'bundles/org.eclipse.equinox.p2.ui/src/org/eclipse/equinox/internal/p2/ui/viewers/InstallIUDropAdapter.java')
-rw-r--r-- | bundles/org.eclipse.equinox.p2.ui/src/org/eclipse/equinox/internal/p2/ui/viewers/InstallIUDropAdapter.java | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/bundles/org.eclipse.equinox.p2.ui/src/org/eclipse/equinox/internal/p2/ui/viewers/InstallIUDropAdapter.java b/bundles/org.eclipse.equinox.p2.ui/src/org/eclipse/equinox/internal/p2/ui/viewers/InstallIUDropAdapter.java new file mode 100644 index 000000000..bb09719e7 --- /dev/null +++ b/bundles/org.eclipse.equinox.p2.ui/src/org/eclipse/equinox/internal/p2/ui/viewers/InstallIUDropAdapter.java @@ -0,0 +1,216 @@ +/******************************************************************************* + * Copyright (c) 2007, 2008 IBM Corporation and others. + * All rights reserved. This program and the accompanying materials + * are made available under the terms of the Eclipse Public License v1.0 + * which accompanies this distribution, and is available at + * http://www.eclipse.org/legal/epl-v10.html + * + * Contributors: + * IBM Corporation - initial API and implementation + *******************************************************************************/ +package org.eclipse.equinox.internal.p2.ui.viewers; + +import java.util.*; +import org.eclipse.core.runtime.IStatus; +import org.eclipse.core.runtime.Status; +import org.eclipse.equinox.internal.p2.ui.*; +import org.eclipse.equinox.internal.p2.ui.actions.InstallAction; +import org.eclipse.equinox.internal.p2.ui.model.InstalledIUElement; +import org.eclipse.equinox.p2.engine.IProfile; +import org.eclipse.equinox.p2.metadata.IInstallableUnit; +import org.eclipse.equinox.p2.ui.ProvisioningUI; +import org.eclipse.jface.util.LocalSelectionTransfer; +import org.eclipse.jface.viewers.*; +import org.eclipse.swt.dnd.*; + +/** + * Defines drop behavior for selected IUs to mean install the IU on the target + * profile. + * + * @since 3.4 + * + */ +public class InstallIUDropAdapter extends ViewerDropAdapter { + + static boolean DEBUG = false; + ProvisioningUI ui; + + /** + * Constructs a new drop adapter. + * + * @param viewer + * the navigator's viewer + */ + public InstallIUDropAdapter(ProvisioningUI ui, StructuredViewer viewer) { + super(viewer); + this.ui = ui; + } + + /** + * Returns an error status with the given info. + */ + IStatus error(String message) { + return error(message, null); + } + + /** + * Returns an error status with the given info. + */ + IStatus error(String message, Throwable exception) { + return new Status(IStatus.ERROR, ProvUIActivator.PLUGIN_ID, 0, message, exception); + } + + /** + * Returns the target profile id for the drop. If the drop is positioned on an + * IU, return its parent profile id. + */ + private String getProfileTarget(Object mouseTarget) { + IProfile profile = ProvUI.getAdapter(mouseTarget, IProfile.class); + if (profile != null) { + return profile.getProfileId(); + } + + if (mouseTarget instanceof InstalledIUElement) { + return ((InstalledIUElement) mouseTarget).getProfileId(); + } + return null; + } + + /** + * Returns an status indicating success. + */ + private IStatus ok() { + return new Status(IStatus.OK, ProvUIActivator.PLUGIN_ID, 0, null, null); + } + + /** + * Perform the drop. + * + * @see org.eclipse.swt.dnd.DropTargetListener#drop(org.eclipse.swt.dnd.DropTargetEvent) + */ + public boolean performDrop(final Object data) { + if (DEBUG) { + System.out.println("Perform drop on target: " + getCurrentTarget() + " with data: " + data); //$NON-NLS-1$//$NON-NLS-2$ + } + if (getCurrentTarget() == null || data == null) + return false; + + ISelection selection = LocalSelectionTransfer.getTransfer().getSelection(); + if (!(selection instanceof IStructuredSelection) || selection.isEmpty()) + return false; + + String profileId = getProfileTarget(getCurrentTarget()); + if (getCurrentOperation() == DND.DROP_COPY && profileId != null) { + final IStructuredSelection structuredSelection = (IStructuredSelection) selection; + ISelectionProvider selectionProvider = new ISelectionProvider() { + + /* (non-Javadoc) + * @see org.eclipse.jface.viewers.ISelectionProvider#addSelectionChangedListener(org.eclipse.jface.viewers.ISelectionChangedListener) + */ + public void addSelectionChangedListener(ISelectionChangedListener listener) { + // Ignore because the selection won't change + } + + /* (non-Javadoc) + * @see org.eclipse.jface.viewers.ISelectionProvider#getSelection() + */ + public ISelection getSelection() { + if (DEBUG) { + System.out.println("Selection was queried by action"); //$NON-NLS-1$ + System.out.println(structuredSelection.toString()); + } + return structuredSelection; + } + + /* (non-Javadoc) + * @see org.eclipse.jface.viewers.ISelectionProvider#removeSelectionChangedListener(org.eclipse.jface.viewers.ISelectionChangedListener) + */ + public void removeSelectionChangedListener(ISelectionChangedListener listener) { + // ignore because the selection is static + } + + /* (non-Javadoc) + * @see org.eclipse.jface.viewers.ISelectionProvider#setSelection(org.eclipse.jface.viewers.ISelection) + */ + public void setSelection(ISelection sel) { + throw new UnsupportedOperationException("This ISelectionProvider is static, and cannot be modified."); //$NON-NLS-1$ + } + }; + InstallAction action = new InstallAction(ui, selectionProvider, profileId); + if (DEBUG) + System.out.println("Running install action"); //$NON-NLS-1$ + action.run(); + return true; + } + return false; + } + + /** + * Validate whether the drop is valid for the target + */ + public boolean validateDrop(Object target, int dragOperation, TransferData transferType) { + + if (LocalSelectionTransfer.getTransfer().isSupportedType(transferType)) { + IStatus status = validateTarget(target, transferType); + if (DEBUG) { + System.out.println("Validate target: " + status); //$NON-NLS-1$ + } + return status.isOK(); + } + return false; + } + + /* + * Overridden to force a copy when the drag is valid. + * + * (non-Javadoc) + * + * @see org.eclipse.jface.viewers.ViewerDropAdapter#dragEnter(org.eclipse.swt.dnd.DropTargetEvent) + */ + public void dragEnter(DropTargetEvent event) { + event.detail = DND.DROP_COPY; + super.dragEnter(event); + } + + /** + * Ensures that the drop target meets certain criteria + */ + private IStatus validateTarget(Object target, TransferData transferType) { + if (LocalSelectionTransfer.getTransfer().isSupportedType(transferType)) { + IInstallableUnit[] ius = getSelectedIUs(); + + if (ius.length == 0) { + return error(ProvUIMessages.ProvDropAdapter_NoIUsToDrop); + } + if (getProfileTarget(target) != null) { + return ok(); + } + return error(ProvUIMessages.ProvDropAdapter_InvalidDropTarget); + } + return error(ProvUIMessages.ProvDropAdapter_UnsupportedDropOperation); + } + + /** + * Returns the resource selection from the LocalSelectionTransfer. + * + * @return the resource selection from the LocalSelectionTransfer + */ + private IInstallableUnit[] getSelectedIUs() { + ISelection selection = LocalSelectionTransfer.getTransfer().getSelection(); + List<IInstallableUnit> ius = new ArrayList<IInstallableUnit>(); + + if (!(selection instanceof IStructuredSelection) || selection.isEmpty()) { + return null; + } + IStructuredSelection structuredSelection = (IStructuredSelection) selection; + + Iterator<?> iter = structuredSelection.iterator(); + while (iter.hasNext()) { + IInstallableUnit iu = ProvUI.getAdapter(iter.next(), IInstallableUnit.class); + if (iu != null) { + ius.add(iu); + } + } + return ius.toArray(new IInstallableUnit[ius.size()]); + } +} |