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 * Licensed to the Apache Software Foundation (ASF) under one
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 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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
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package org.openoffice.setup.Controller;

import java.util.Vector;
import org.openoffice.setup.InstallData;
import org.openoffice.setup.PanelController;
import org.openoffice.setup.Panel.ChooseComponents;
import org.openoffice.setup.ResourceManager;
import org.openoffice.setup.SetupData.PackageDescription;
import org.openoffice.setup.SetupData.SetupDataProvider;
import org.openoffice.setup.Util.Calculator;
import org.openoffice.setup.Util.Dumper;
import org.openoffice.setup.Util.Informer;
import org.openoffice.setup.Util.ModuleCtrl;
import org.openoffice.setup.Util.PackageCollector;

public class ChooseComponentsCtrl extends PanelController {

    private String helpFile;

    public ChooseComponentsCtrl() {
        super("ChooseComponents", new ChooseComponents());
        helpFile = "String_Helpfile_ChooseComponents";
    }

    public String getNext() {
        return new String("InstallationImminent");
    }
    
    public String getPrevious() {

        InstallData data = InstallData.getInstance();
        
        if ( data.isRootInstallation() ) {
            if ( data.sameVersionExists() ) {
                if ( data.hideEula() ) {
                    return new String("Prologue");            
                } else {
                    return new String("AcceptLicense");
                }
            } else {
                return new String("ChooseInstallationType");
            }
        } else {
            if ( data.sameVersionExists() ) {
                return new String("ChooseDirectory");            
            } else {
                return new String("ChooseInstallationType");
            }
        }
    }

    public final String getHelpFileName () {
        return this.helpFile;
    }
    
    public void beforeShow() {

        InstallData data = InstallData.getInstance();
        
        // Setting the package size for node modules, that have hidden children
        // -> Java module has three hidden children and 0 byte size

        if ( ! data.moduleSizeSet() ) {
            PackageDescription packageData = SetupDataProvider.getPackageDescription();
            ModuleCtrl.setModuleSize(packageData);
            data.setModuleSizeSet(true);
        }
        
        if ( data.sameVersionExists() ) {
            ChooseComponents panel = (ChooseComponents)getPanel();
            String dialogTitle = ResourceManager.getString("String_ChooseComponents1_Maintain");
            panel.setTitleText(dialogTitle);
        }
        
    }
    
    public boolean afterShow(boolean nextButtonPressed) {
        boolean repeatDialog = false;

        InstallData data = InstallData.getInstance();
        PackageDescription packageData = SetupDataProvider.getPackageDescription();
        
        if ( nextButtonPressed ) {
            
            // Check, if at least one visible module was selected for installation
            data.setVisibleModulesChecked(false);
            ModuleCtrl.checkVisibleModulesInstall(packageData, data);
        
            if ( data.visibleModulesChecked() ) {

                // Check, if at least one application module was selected for installation
                // (not necessary, if an older product is updated or additional modules are
                // added in maintenance mode).
                
                boolean applicationSelected = false;
                if ( data.olderVersionExists() || data.sameVersionExists() ) {
                    applicationSelected = true;            
                } else {
                    data.setApplicationModulesChecked(false);
                    ModuleCtrl.checkApplicationSelection(packageData, data); 
                    applicationSelected = data.applicationModulesChecked();
                }

                if ( applicationSelected ) {

                    // Check, if at least one language module was selected for installation
                    // (not necessary, if an older product is updated or additional modules are
                    // added in maintenance mode).
                
                    boolean languageSelected = false;
                    if ( data.olderVersionExists() || data.sameVersionExists() || ( ! data.isMultiLingual())) {
                        languageSelected = true;            
                    } else {
                        data.setLanguageModulesChecked(false);
                        ModuleCtrl.checkLanguageSelection(packageData, data); 
                        languageSelected = data.languageModulesChecked();
                    }
                
                    if ( languageSelected ) {

                        // Set module settings for hidden modules.
                        // Then it is possible to calculate the size of the installed product,
                        // to show a warning and to set the repeatDialog value to true

                        if ( data.logModuleStates() ) {
                            Dumper.logModuleStates(packageData, "ChooseComponentsCtrl: Before setHiddenModuleSettingsInstall");
                        }

                        ModuleCtrl.setHiddenModuleSettingsInstall(packageData);
                        // Dumper.dumpInstallPackages(packageData);

                        if ( data.logModuleStates() ) {
                            Dumper.logModuleStates(packageData, "ChooseComponentsCtrl: After setHiddenModuleSettingsInstall");
                        }

                        // Collecting packages to install
                        Vector installPackages = new Vector();
                        PackageCollector.collectInstallPackages(packageData, installPackages);
                        data.setInstallPackages(installPackages);

                        // Check disc space
                        if ( Calculator.notEnoughDiscSpace(data) ) {
                            repeatDialog = true;
                            System.err.println("Not enough disc space");
                        }
                    } else {   // no language modules selected for installation
                        String message = ResourceManager.getString("String_No_Language_Selected_1") + "\n" +
                                         ResourceManager.getString("String_No_Language_Selected_2");
                        String title = ResourceManager.getString("String_Change_Selection");
                        Informer.showInfoMessage(message, title);
                        repeatDialog = true;                    
                    }
                } else {
                    String message = ResourceManager.getString("String_No_Application_Selected_1") + "\n" +
                                     ResourceManager.getString("String_No_Application_Selected_2");
                    String title = ResourceManager.getString("String_Change_Selection");
                    Informer.showInfoMessage(message, title);
                    repeatDialog = true;
                }    
            } else {  // no modules selected for installation
                String message = ResourceManager.getString("String_No_Components_Selected_1") + "\n" +
                                 ResourceManager.getString("String_No_Components_Selected_2");
                String title = ResourceManager.getString("String_Nothing_To_Install");
                Informer.showInfoMessage(message, title);
                repeatDialog = true;
            }
        } else {  // the back button was pressed
            // Saving typical selection state values (always if back button is pressed!).
            // System.err.println("Saving custom selection states");
            ModuleCtrl.saveCustomSelectionStates(packageData);
            data.setCustomSelectionStateSaved(true);            
        }
        
        return repeatDialog;
    }
    
}