com.google.devtools.depan.view_doc.layout.eclipse.ui.widgets.LayoutDialog.java Source code

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/*
 * Copyright 2017 The Depan Project Authors
 *
 * 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.google.devtools.depan.view_doc.layout.eclipse.ui.widgets;

import com.google.devtools.depan.platform.eclipse.ui.widgets.Widgets;
import com.google.devtools.depan.view_doc.layout.model.LayoutPlan;
import com.google.devtools.depan.view_doc.layout.model.LayoutPlanDocument;

import org.eclipse.core.resources.IProject;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Shell;

/**
 * @author <a href="leeca@pnambic.com">Lee Carver</a>
 */
public abstract class LayoutDialog<T extends LayoutPlan> extends Dialog {

    private final T layout;

    private final IProject project;

    private T result;

    /**
     * @param parentShell
     */
    protected LayoutDialog(Shell parentShell, T layout, IProject project) {
        super(parentShell);
        this.layout = layout;
        this.project = project;
    }

    @Override
    protected boolean isResizable() {
        return true;
    }

    @Override
    protected void okPressed() {
        result = buildFilter();
        super.okPressed();
    }

    public T getResult() {
        return result;
    }

    protected T getLayoutPlan() {
        return layout;
    }

    protected IProject getProject() {
        return project;
    }

    protected abstract T buildFilter();

    /////////////////////////////////////
    // UX Setup

    /**
     * Add Save As... button on left side of each FilterEditor dialog.
     */
    @Override
    protected Control createButtonBar(Composite parent) {
        Composite result = Widgets.buildGridContainer(parent, 2);
        result.setLayoutData(Widgets.buildHorzFillData());

        Composite saveAs = setUpSaveAs(result);
        saveAs.setLayoutData(Widgets.buildHorzFillData());

        // Parent's button bar on right
        super.createButtonBar(result);
        return result;
    }

    private Composite setUpSaveAs(Composite parent) {
        Composite result = new Composite(parent, SWT.NONE);
        GridLayout layout = Widgets.buildContainerLayout(1);
        layout.marginWidth = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_MARGIN);
        layout.marginHeight = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN);
        layout.horizontalSpacing = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING);
        layout.verticalSpacing = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_SPACING);
        result.setLayout(layout);

        Button saveAs = Widgets.buildCompactPushButton(result, "Save As...");
        setButtonLayoutData(saveAs);
        saveAs.addSelectionListener(new SelectionAdapter() {

            @Override
            public void widgetSelected(SelectionEvent e) {
                handleSaveAs();
            }
        });

        return result;
    }

    /////////////////////////////////////
    // SaveAs support

    /**
     * Provide a document to save,
     * based on the current state of the editor's controls.
     */
    protected LayoutPlanDocument<? extends LayoutPlan> buildSaveResource() {
        LayoutPlanDocument<? extends LayoutPlan> result = null;
        return result;
    }

    private void handleSaveAs() {
        LayoutPlanDocument<? extends LayoutPlan> rsrc = buildSaveResource();
        //$ config.saveResource(rsrc, getShell(), getProject());
    }
}