com.intellij.uiDesigner.actions.GroupRowsColumnsAction.java Source code

Introduction

Here is the source code for com.intellij.uiDesigner.actions.GroupRowsColumnsAction.java

Source

/*
 * Copyright 2000-2009 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.intellij.uiDesigner.actions;

import com.intellij.openapi.actionSystem.AnActionEvent;
import com.intellij.uiDesigner.CaptionSelection;
import com.intellij.uiDesigner.UIDesignerBundle;
import com.jgoodies.forms.layout.FormLayout;

import java.util.ArrayList;

/**
 * @author yole
 */
public class GroupRowsColumnsAction extends RowColumnAction {
    public GroupRowsColumnsAction() {
        super(UIDesignerBundle.message("action.group.columns"), null, UIDesignerBundle.message("action.group.rows"),
                null);
    }

    @Override
    public void update(final AnActionEvent e) {
        super.update(e);
        CaptionSelection selection = CaptionSelection.DATA_KEY.getData(e.getDataContext());
        if (selection != null) {
            e.getPresentation()
                    .setEnabled(selection.getContainer() != null
                            && selection.getContainer().getLayout() instanceof FormLayout
                            && getCellsToGroup(selection).length > 1 && !isGrouped(selection));
        }
    }

    public static boolean isGrouped(final CaptionSelection selection) {
        FormLayout layout = (FormLayout) selection.getContainer().getLayout();
        int[][] groups = selection.isRow() ? layout.getRowGroups() : layout.getColumnGroups();
        final int[] indices = selection.getSelection();
        for (int[] group : groups) {
            if (intersect(group, indices))
                return true;
        }
        return false;
    }

    public static boolean intersect(final int[] group, final int[] indices) {
        for (int groupMember : group) {
            for (int index : indices) {
                if (groupMember == index + 1)
                    return true;
            }
        }
        return false;
    }

    protected void actionPerformed(CaptionSelection selection) {
        FormLayout layout = (FormLayout) selection.getContainer().getLayout();
        int[][] oldGroups = selection.isRow() ? layout.getRowGroups() : layout.getColumnGroups();
        int[][] newGroups = new int[oldGroups.length + 1][];
        System.arraycopy(oldGroups, 0, newGroups, 0, oldGroups.length);
        int[] cellsToGroup = getCellsToGroup(selection);
        newGroups[oldGroups.length] = new int[cellsToGroup.length];
        for (int i = 0; i < cellsToGroup.length; i++) {
            newGroups[oldGroups.length][i] = cellsToGroup[i] + 1;
        }
        if (selection.isRow()) {
            layout.setRowGroups(newGroups);
        } else {
            layout.setColumnGroups(newGroups);
        }
    }

    private static int[] getCellsToGroup(CaptionSelection selection) {
        ArrayList<Integer> cells = new ArrayList<Integer>();
        int[] selectedIndices = selection.getSelection();
        for (int i : selectedIndices) {
            if (!selection.getContainer().getGridLayoutManager().isGapCell(selection.getContainer(),
                    selection.isRow(), i)) {
                cells.add(i);
            }
        }
        int[] result = new int[cells.size()];
        for (int i = 0; i < cells.size(); i++) {
            result[i] = cells.get(i).intValue();
        }
        return result;
    }
}