Eclipse编辑器多点输入插件,支持选中同名字符,选中位置同时输入

package com.szmirren.eclipse.multiplecursor.handlers; import java.util.HashSet; import java.util.Set; import org.eclipse.core.commands.AbstractHandlerWithState; import org.eclipse.core.commands.ExecutionEvent; import org.eclipse.core.commands.ExecutionException; import org.eclipse.core.commands.State; import org.eclipse.jface.text.BadLocationException; import org.eclipse.jface.text.FindReplaceDocumentAdapter; import org.eclipse.jface.text.IDocument; import org.eclipse.jface.text.IRegion; import org.eclipse.jface.text.ITextViewer; import org.eclipse.jface.text.link.LinkedModeModel; import org.eclipse.jface.text.link.LinkedModeUI; import org.eclipse.jface.text.link.LinkedPosition; import org.eclipse.jface.text.link.LinkedPositionGroup; import org.eclipse.jface.text.source.ISourceViewer; import org.eclipse.swt.graphics.Point; import org.eclipse.ui.IEditorPart; import org.eclipse.ui.handlers.HandlerUtil; import org.eclipse.ui.texteditor.link.EditorLinkedModeUI; import com.szmirren.eclipse.multiplecursor.common.CoordinatesUtil; import com.szmirren.eclipse.multiplecursor.common.DeleteBlockingExitPolicy; import com.szmirren.eclipse.multiplecursor.common.ISourceViewerFinder; import com.szmirren.eclipse.multiplecursor.common.TextUtil; /** * <a href="https://github.com/caspark/eclipse-multicursor"> Update from * caspark</a> */ public class SelectNextOccurrenceHandler extends AbstractHandlerWithState { private static final String ID_SELECTS_IN_PROGRESS = "SELECTS_IN_PROGRESS"; private static final class SelectInProgress { public final String searchText; public final Set<IRegion> existingSelections; public final int nextOffset; private final Point startingSelection; public SelectInProgress(Point startingSelection, String selectedText, Set<IRegion> existingSelections, int nextOffset) { this.startingSelection = startingSelection; this.searchText = selectedText; this.existingSelections = existingSelections; this.nextOffset = nextOffset; } @Override public String toString() { return "[Find " + searchText + " at " + nextOffset + "; original=" + startingSelection + "]"; } } @Override public Object execute(ExecutionEvent event) throws ExecutionException { IEditorPart editor = HandlerUtil.getActiveEditorChecked(event); ISourceViewer viewer = ISourceViewerFinder.fromEditorPart(editor); if (viewer != null) { startEditing(viewer); } return null; } private void startEditing(ISourceViewer viewer) throws ExecutionException { final Point selectedRange = viewer.getSelectedRange(); final IDocument document = viewer.getDocument(); try { final String searchText; final int candidateSearchOffset; final int selStart = CoordinatesUtil.fromOffsetAndLengthToStartAndEnd(selectedRange).x; if (selectedRange.y == 0) { // no characters selected final String documentText = document.get(); final Point wordOffsetAndLen = TextUtil.findWordSurrounding(documentText, selStart); if (wordOffsetAndLen != null) { searchText = document.get(wordOffsetAndLen.x, wordOffsetAndLen.y); candidateSearchOffset = wordOffsetAndLen.x; } else { final IRegion selectedLine = document.getLineInformationOfOffset(selStart); searchText = document.get(selectedLine.getOffset(), selectedLine.getLength()); candidateSearchOffset = selectedLine.getOffset(); } } else { searchText = document.get(selectedRange.x, selectedRange.y); candidateSearchOffset = selectedRange.x; } SelectInProgress currentState = getCurrentState(); final Set<IRegion> selections; if (LinkedModeModel.getModel(document, 0) != null && currentState != null && selectedRange.equals(currentState.startingSelection) && searchText.equals(currentState.searchText)) { selections = currentState.existingSelections; IRegion matchingRegion = findReplaceAdaptor(document, currentState.nextOffset, searchText); if (matchingRegion != null && !selections.contains(matchingRegion)) { selections.add(matchingRegion); saveCurrentState(new SelectInProgress(selectedRange, searchText, selections, matchingRegion.getOffset() + matchingRegion.getLength())); if (selections.size() == 1) { IRegion nextRegion = findReplaceAdaptor(document, matchingRegion.getOffset() + matchingRegion.getLength(), searchText); if (nextRegion != null && !selections.contains(nextRegion)) { selections.add(nextRegion); saveCurrentState(new SelectInProgress(selectedRange, searchText, selections, nextRegion.getOffset() + nextRegion.getLength())); } } } else { IRegion againMatchingRegion = findReplaceAdaptor(document, 0, searchText); if (againMatchingRegion != null && !selections.contains(matchingRegion)) { selections.add(againMatchingRegion); saveCurrentState(new SelectInProgress(selectedRange, searchText, selections, againMatchingRegion.getOffset() + againMatchingRegion.getLength())); } } } else { selections = new HashSet<IRegion>(); IRegion matchingRegion = findReplaceAdaptor(document, candidateSearchOffset, searchText); if (matchingRegion != null && !selections.contains(matchingRegion)) { selections.add(matchingRegion); saveCurrentState(new SelectInProgress(selectedRange, searchText, selections, matchingRegion.getOffset() + matchingRegion.getLength())); if (selections.size() == 1) { IRegion nextRegion = findReplaceAdaptor(document, matchingRegion.getOffset() + matchingRegion.getLength(), searchText); if (nextRegion != null && !selections.contains(nextRegion)) { selections.add(nextRegion); saveCurrentState(new SelectInProgress(selectedRange, searchText, selections, nextRegion.getOffset() + nextRegion.getLength())); } } } } startLinkedEdit(selections, viewer, selectedRange); } catch (Exception e) { e.printStackTrace(); } } /** * 查询文档中的IRegion * * @param startOffset * 开始位置 * @param document * 文档 * @param searchText * 搜索文档 * @return * @throws BadLocationException */ public IRegion findReplaceAdaptor(IDocument document, int startOffset, String searchText) throws BadLocationException { FindReplaceDocumentAdapter findReplaceAdaptor = new FindReplaceDocumentAdapter(document); IRegion matchingRegion = findReplaceAdaptor.find(startOffset, searchText, true, true, false, false); return matchingRegion; } // Reference: RenameLinkedMode class shows how linked mode is meant to be // used private void startLinkedEdit(Set<IRegion> selections, ITextViewer viewer, Point originalSelection) throws BadLocationException { if (selections == null || selections.isEmpty()) { return; } final LinkedPositionGroup linkedPositionGroup = new LinkedPositionGroup(); for (IRegion selection : selections) { linkedPositionGroup.addPosition(new LinkedPosition(viewer.getDocument(), selection.getOffset(), selection.getLength())); } LinkedModeModel model = new LinkedModeModel(); model.addGroup(linkedPositionGroup); model.forceInstall(); // FIXME can add a listener here to listen for the end of linked mode // model.addLinkingListener(null); LinkedModeUI ui = new EditorLinkedModeUI(model, viewer); ui.setExitPolicy(new DeleteBlockingExitPolicy(viewer.getDocument())); ui.enter(); // by default the text being edited is selected so restore original // selection viewer.setSelectedRange(originalSelection.x, originalSelection.y); } private SelectInProgress getCurrentState() { State state = getState(ID_SELECTS_IN_PROGRESS); if (state == null) { return null; } else { return (SelectInProgress) state.getValue(); } } private void saveCurrentState(SelectInProgress selectInProgress) { State state = new State(); state.setValue(selectInProgress); state.setId(ID_SELECTS_IN_PROGRESS); addState(ID_SELECTS_IN_PROGRESS, state); } @Override public void handleStateChange(State state, Ob