| /*=============================================================================# |
| # Copyright (c) 2009, 2020 Stephan Wahlbrink and others. |
| # |
| # This program and the accompanying materials are made available under the |
| # terms of the Eclipse Public License 2.0 which is available at |
| # https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0 |
| # which is available at https://www.apache.org/licenses/LICENSE-2.0. |
| # |
| # SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 |
| # |
| # Contributors: |
| # Stephan Wahlbrink <sw@wahlbrink.eu> - initial API and implementation |
| #=============================================================================*/ |
| |
| package org.eclipse.statet.internal.r.ui.editors; |
| |
| import org.eclipse.jface.text.contentassist.IContextInformationExtension; |
| import org.eclipse.swt.graphics.Image; |
| |
| import org.eclipse.statet.jcommons.collections.IntArrayList; |
| import org.eclipse.statet.jcommons.collections.IntList; |
| import org.eclipse.statet.jcommons.lang.NonNullByDefault; |
| import org.eclipse.statet.jcommons.lang.Nullable; |
| |
| import org.eclipse.statet.ltk.ui.sourceediting.assist.AssistInformationProposal; |
| import org.eclipse.statet.r.core.model.ArgsDefinition; |
| import org.eclipse.statet.r.core.model.IRMethod; |
| import org.eclipse.statet.r.ui.RLabelProvider; |
| |
| |
| @NonNullByDefault |
| public class RArgumentListContextInformation implements AssistInformationProposal, |
| IContextInformationExtension { |
| |
| |
| private final int offset; // can be negative for FragmentDocument |
| |
| private final @Nullable ArgsDefinition args; |
| |
| private final String information; |
| private final int[] informationArgumentIdxs; |
| |
| |
| public RArgumentListContextInformation(final int offset, final IRMethod method) { |
| this.offset= offset; |
| this.args= method.getArgsDefinition(); |
| final StringBuilder sb= new StringBuilder(); |
| final IntList idxs= new IntArrayList(); |
| new RLabelProvider().appendArgumentInformation(sb, idxs, this.args); |
| this.information= sb.toString(); |
| this.informationArgumentIdxs= idxs.toArray(); |
| } |
| |
| |
| public int getCallArgsOffset() { |
| return this.offset; |
| } |
| |
| public @Nullable ArgsDefinition getArgsDefinition() { |
| return this.args; |
| } |
| |
| |
| @Override |
| public String getContextDisplayString() { |
| return getInformationDisplayString(); |
| } |
| |
| @Override |
| public @Nullable Image getImage() { |
| return null; |
| } |
| |
| @Override |
| public int getContextInformationPosition() { |
| return Math.max(this.offset, 0); |
| } |
| |
| @Override |
| public String getInformationDisplayString() { |
| return this.information; |
| } |
| |
| public int[] getInformationDisplayStringArgumentIdxs() { |
| return this.informationArgumentIdxs; |
| } |
| |
| |
| @Override |
| public boolean equals(final @Nullable Object obj) { |
| // prevent stacking of context information at the same position |
| return true; |
| } |
| |
| } |