ActiveX Programming Unleashed CD/AXU.iso/visualj/msdev/samples/microsoft/olecontrols/orgchart.java

Java Source | 1996-08-27 | 8.7 KB | 325 lines

//******************************************************************************
// orgchart.java:    Applet
//
//******************************************************************************
import java.applet.*;
import java.awt.*;

import msoutl32.*;
    // import the Outline control
import com.ms.com.Variant;

// mock database for the applet
//    The mock database was chosen to minimize the number
//    of technologies in the sample
import employee;
import sample_database;

// SimpleForm is the data display form for the applet
class SimpleForm extends Panel
{
    // Access to the database
    sample_database m_db;
    employee m_current;

    // The fields on the form
    TextField field1;
    TextField field2;
    TextField field3;
    TextField field4;
    TextField field5;
    TextField field6;
    Checkbox field7;

    // The OLE control to be filled
    IOutlineCtrl m_tree;

    // Construct the form
    SimpleForm()
    {
        // Create panels for labels and fields
        Panel labels = new Panel();
        Panel fields = new Panel();

        // Set those panels as single-column grids
        labels.setLayout(new GridLayout(0, 1));
        fields.setLayout(new GridLayout(0, 1));

        // Put the labels and fields panels in to the form
        setLayout(new FlowLayout());
        add(labels);
        add(fields);

        // Add the individual labels and fields to the form
        //    Add the label
        labels.add(new Label("Email Name"));
        //    Add the field
        fields.add(field1 = new TextField(10));
        //    Enable it for query
        field1.enable();

        //    Add the label
        labels.add(new Label("Full Name"));
        //    Add the field
        fields.add(field2 = new TextField(25));
        //    Disable it, display only
        field2.disable();

        labels.add(new Label("Office Location"));
        fields.add(field3 = new TextField(15));
        field3.disable();

        labels.add(new Label("Phone Extension"));
        fields.add(field4 = new TextField(12));
        field4.disable();

        labels.add(new Label("Manager"));
        fields.add(field5 = new TextField(10));
        field5.disable();

        labels.add(new Label("Date of Hire"));
        fields.add(field6 = new TextField(10));
        field6.disable();

        labels.add(new Label("Certified"));
        fields.add(field7 = new Checkbox());
        field7.disable();
    }

    void setDB(sample_database db, IOutlineCtrl tree)
    {
        // Set the database and the outline control
        m_db = db;
        m_tree = tree;
    }

    // Show the record for the specified email name
    void showData(String email)
    {
        // Search the database for the name
        m_current = m_db.find(email);

        // if the name is not found empty the form
        if(m_current == null)
        {
            field1.setText(email);
            field2.setText("Not found");
            field3.setText("");
            field4.setText("");
            field5.setText("");
            field6.setText("");
            field7.setState(false);
        }
        else // populate the form with data
        {
            field1.setText(m_current.email);
            field2.setText(m_current.name);
            field3.setText(m_current.location);
            field4.setText(m_current.phone);
            field5.setText(m_current.manager);
            field6.setText(m_current.hireDate.toString());
            field7.setState(m_current.certified);
        }

        // Fill the outline control with direct reports
        fillTree();

    }

    // Show the record for the email name on the form
    void showData()
    {
        showData(field1.getText());
    }

    // Fill the outline control with direct reports
    public void fillTree()
    {
        // Create a variable for the root of the outline control
        short root = 0;

        // If there are entries in the outline control, delete them
        if(m_tree.getListCount() > 0)
            m_tree.RemoveItem(root);

        // If the email name is not found, return
        if(m_current == null)
            return;

        // Create a Variant for an optional parameter
        Variant noParam = new Variant();
        // Set the Variant for no parameter
        noParam.noParam();

        // Add the employee as the root of the outline
        m_tree.AddItem(m_current.email, noParam);

        // Set the root as the current item
        //    Subsequent AddItem will be subentries of the current item
        m_tree.putListIndex(root);

        // Find all the direct reports in the database
        String reports[] = m_db.findReports(m_current.email);

        // If there are no direct reports, return
        if(reports.length == 0)
            return;

        // Add each direct report to the outline as a subentry
        for(int i = 0; i < reports.length; i ++)
        {
            m_tree.AddItem(reports[i], noParam);
        }

    }


}

//==============================================================================
// Main Class for applet orgchart
//
//==============================================================================
public class orgchart extends Applet
{
    // The data form
    SimpleForm m_form;

    // The toolbar
    Panel m_tools;
    Button m_email;
    Button m_mgr;
    Button m_sel;

    // The Outline control
    IOutlineCtrl m_outline;

    // The mock database
    sample_database m_db = new sample_database();

    // orgchart Class Constructor
    //--------------------------------------------------------------------------
    public orgchart()
    {
        // Create the toolbar and add it to the applet
        setLayout(new BorderLayout());
        add("North", m_tools = new Panel());
        m_tools.add(m_email = new Button("Find by Email"));
        m_tools.add(m_mgr = new Button("Look Up Manager"));
        m_tools.add(m_sel = new Button("Find Selection"));

        // Create the form and add it to the applet
        add("Center", m_form = new SimpleForm());
    }

    // APPLET INFO SUPPORT:
    //        The getAppletInfo() method returns a string describing the applet's
    // author, copyright date, or miscellaneous information.
    //--------------------------------------------------------------------------
    public String getAppletInfo()
    {
        return "Name: orgchart\r\n" +
               "Author: Dan Jinguji\r\n" +
               "Created with Microsoft Visual J++ Version 1.0";
    }


    // The init() method is called by the AWT when an applet is first loaded or
    // reloaded.  Override this method to perform whatever initialization your
    // applet needs, such as initializing data structures, loading images or
    // fonts, creating frame windows, setting the layout manager, or adding UI
    // components.
    //--------------------------------------------------------------------------
    public void init()
    {
        // If you use a ResourceWizard-generated "control creator" class to
        // arrange controls in your applet, you may want to call its
        // CreateControls() method from within this method. Remove the following
        // call to resize() before adding the call to CreateControls();
        // CreateControls() does its own resizing.
        //----------------------------------------------------------------------
        resize(320, 200);
    }

    // Place additional applet clean up code here.  destroy() is called when
    // when you applet is terminating and being unloaded.
    //-------------------------------------------------------------------------
    public void destroy()
    {
    }

    // orgchart Paint Handler
    //--------------------------------------------------------------------------
    public void paint(Graphics g)
    {
    }

    //        The start() method is called when the page containing the applet
    // first appears on the screen. The AppletWizard's initial implementation
    // of this method starts execution of the applet's thread.
    //--------------------------------------------------------------------------
    public void start()
    {
    }

    //        The stop() method is called when the page containing the applet is
    // no longer on the screen. The AppletWizard's initial implementation of
    // this method stops execution of the applet's thread.
    //--------------------------------------------------------------------------
    public void stop()
    {
    }

    // Accept the Outline control passed from Window_OnLoad
    public void setControl(Object outlineCtl)
    {
        // Cast the control
        m_outline = (IOutlineCtrl) outlineCtl;

        // Set control style
        m_outline.putStyle(StyleConstants.outPlusMinusText);

        // Set the database and control in the form
        m_form.setDB(m_db, m_outline);

        // Display a record
        m_form.showData("chrisb");
    }

    public boolean action(Event evt, Object what)
    {
        // Handle the Find By Email button
        if(evt.target == m_email)
        {
            // Find the value in the email TextField
            m_form.showData();

            // Event handled
            return true;
        }

        // Handle the Look Up Manager button
        if(evt.target == m_mgr)
        {
            // Find the value in the manager TextField
            m_form.showData(m_form.field5.getText());

            // Event handled
            return true;
        }

        // Handle the Find Selection button
        if(evt.target == m_sel)
        {
            // Find the value of the selection in the outline
            m_form.showData(m_outline.getText());

            // Event handled
            return true;
        }

        // Event not handled
        return false;
    }
}