NedFormBase.java

/*******************************************************************************
 * Copyright (c) 2011-2012 Nokia Corporation
 * 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:
 * Comarch team - initial API and implementation
 *******************************************************************************/
package org.ned.client.view;

import com.sun.lwuit.*;
import com.sun.lwuit.plaf.Style;
import com.sun.lwuit.plaf.UIManager;
import org.ned.client.NedMidlet;
import org.ned.client.NedResources;
import org.ned.client.library.advanced.LibraryElement;
import org.ned.client.library.advanced.LibraryGeneralModel;
import org.ned.client.utils.NedXmlUtils;
import org.ned.client.view.renderer.MenuCellRenderer;
import org.ned.client.view.renderer.TitleBarPainter;

public class NedFormBase extends Form {

    private final static int MIN_MARGIN = 30;
    private final static int LEFT_MARGIN_OFFSET = 10;
    private TitleBarPainter mTitleBar;
    protected Command showFreeMem;
    protected LibraryElement mNewLibModel;
    protected LibraryGeneralModel mNewModel;

    public NedFormBase( String contentId ) {

        mNewModel = LibraryGeneralModel.getInfo(
                NedXmlUtils.getDocFile(
                NedMidlet.getSettingsManager().getLibraryManager().
                getCurrentLibrary().getFileUri() ) );

        mNewLibModel = mNewModel.getElement( contentId );
    }

    public NedFormBase() {
    }

    public void show() {
        if ( WaitingScreen.isShowed() ) {
            WaitingScreen.dispose();
        }
        super.show();
//        System.gc();
//        System.out.println(Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory());
    }

    protected void setNedTitle( String title ) {
        setTitle( " " );
        mTitleBar = new TitleBarPainter( NedResources.MID_TITLE, title );
        getTitleStyle().setBgPainter( mTitleBar );
        getTitleComponent().setPreferredH( mTitleBar.getPrefferedH() );
    }

    protected Command showMenuDialog( Dialog menu ) {
        int marginW = calculateMarginW( menu );
        marginW = marginW < MIN_MARGIN ? MIN_MARGIN : marginW;

        int marginH = calculateMarginH( menu );
        marginH = marginH < 0 ? 0 : marginH;

        return menu.show( marginH, 0, LEFT_MARGIN_OFFSET, marginW
                                                          - 2
                                                            * LEFT_MARGIN_OFFSET, true );
    }

    private int calculateMarginW( Dialog menuDialog ) {
        String longestDesc = "";
        for ( int i = 0; i < getCommandCount(); i++ ) {
            String description = getCommand( i ).getCommandName();
            longestDesc = description.length() < longestDesc.length() ? longestDesc : description;
        }
        Style style = UIManager.getInstance().getComponentStyle( "Command" );
        int commandGap = 0;
        if ( style != null ) {
            commandGap = style.getMargin( Component.LEFT )
                         + style.getMargin( Component.RIGHT )
                         + style.getPadding( Component.LEFT )
                         + style.getPadding( Component.RIGHT );
        }
        //there is no wey to get cell renderer from form
        //creating temporary one to calculete margins and offsets
        MenuCellRenderer mcr = new MenuCellRenderer();
        int f1W = mcr.getStyle().getFont().stringWidth( longestDesc );
        int f2W = mcr.getSelectedStyle().getFont().stringWidth( longestDesc );

        return Display.getInstance().getDisplayWidth() - menuDialog.getStyle().
                getMargin( Component.LEFT )
               - menuDialog.getStyle().getMargin( Component.RIGHT )
               - menuDialog.getStyle().getPadding( Component.LEFT )
               - menuDialog.getStyle().getPadding( Component.RIGHT )
               - mcr.getStyle().getMargin( Component.LEFT )
               - mcr.getStyle().getMargin( Component.RIGHT )
               - mcr.getStyle().getPadding( Component.LEFT )
               - mcr.getStyle().getPadding( Component.RIGHT )
               - (f1W < f2W ? f2W : f1W)
               - getSideGap()
               - menuDialog.getSideGap()
               - commandGap
               - 15;
    }

    private int calculateMarginH( Dialog menuDialog ) {
        //there is no way to get cell renderer from form
        //creating temporary one to calculete margins and offsets
        MenuCellRenderer rendererItem = new MenuCellRenderer();
        int itemTopMargin = rendererItem.getStyle().getMargin( Component.TOP );
        int itemBottonMargin = rendererItem.getStyle().getMargin( Component.BOTTOM );
        int itemTopPadding = rendererItem.getStyle().getPadding( Component.TOP );
        int itemBottonPadding = rendererItem.getStyle().getPadding( Component.BOTTOM );
        int fontHigh = rendererItem.getStyle().getFont().getHeight();//this font is used in cell

        List list = new List();
        Style style = list.getStyle();
        int listGap = 0;
        if ( style != null ) {
            listGap = style.getMargin( Component.LEFT )
                      + style.getMargin( Component.RIGHT )
                      + style.getPadding( Component.LEFT )
                      + style.getPadding( Component.RIGHT )
                      + getCommandCount() * list.getItemGap();
        }
        return Display.getInstance().getDisplayHeight() - menuDialog.getStyle().
                getMargin( Component.TOP )
               - menuDialog.getStyle().getMargin( Component.BOTTOM )
               - menuDialog.getStyle().getPadding( Component.BOTTOM )
               - menuDialog.getStyle().getPadding( Component.TOP )
               - Display.getInstance().getCurrent().getSoftButton( 0 ).
                getPreferredH()
               - getCommandCount() * (fontHigh
                                      + itemTopMargin
                                      + itemBottonMargin
                                      + itemTopPadding
                                      + itemBottonPadding)
               - listGap;
    }
}