一天一例之一：Add FeatureLayer

目前设置一天一例，督促自己学习，其中代码为esri里arcengine samples中例子，本文并未对其修改。文中中文是本人画蛇添足上去的，本例子比较简单，只是简单贴了下来，感觉bean挺方便了。

 

/*

 * ArcGIS Engine Developer Sample

 * Application Name: AddFeatureLayer.java

 */

package com.esri.arcgis.samples.beans.mapcontrol;

import java.awt.BorderLayout;

import java.awt.Dimension;

import java.awt.FlowLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.io.File;

import java.io.IOException;

import javax.swing.BorderFactory;

import javax.swing.Box;

import javax.swing.BoxLayout;

import javax.swing.JButton;

import javax.swing.JComboBox;

import javax.swing.JDialog;

import javax.swing.JFileChooser;

import javax.swing.JFrame;

import javax.swing.JPanel;

import javax.swing.UIManager;

import javax.swing.filechooser.FileFilter;

import com.esri.arcgis.beans.TOC.TOCBean;

import com.esri.arcgis.beans.map.MapBean;

import com.esri.arcgis.beans.toolbar.ToolbarBean;

import com.esri.arcgis.carto.ILayer;

import com.esri.arcgis.carto.esriViewDrawPhase;

import com.esri.arcgis.controls.ControlsMapFullExtentCommand;

import com.esri.arcgis.controls.ControlsMapPanTool;

import com.esri.arcgis.controls.ControlsMapZoomInTool;

import com.esri.arcgis.controls.ControlsMapZoomOutTool;

import com.esri.arcgis.controls.ControlsOpenDocCommand;

import com.esri.arcgis.system.AoInitialize;

import com.esri.arcgis.system.EngineInitializer;

import com.esri.arcgis.system.esriLicenseProductCode;

import com.esri.arcgis.systemUI.esriCommandStyles;

/**

 * This sample shows how to programmatically add and delete layers

 * from a MapBean

 **/

public class AddFeatureLayer extends JFrame implements ActionListener {

JPanel mainPanel = null;

JPanel rightPanel = null;

JButton addLayerButton = null;

JButton removeLayerButton = null;

MapBean mapBean;

TOCBean tocBean;

ToolbarBean toolbarBean;

public AddFeatureLayer() {

super("Add FeatureLayer");

buildFrame();

setSize(650, 500);

setVisible(true);

initControl();

}

/**This method builds 'this' frame as per the following diagram:

*

*   /------------------------------------------------------------------------------|

*   |            BorderLayout.NORTH                                                |

*   |            ToolBarControl                                                    |

*   |------------------------------------------------------------------------------|

*   |                                                |   BorderLayout.East         |

*   |                                                |                             |

*   |                                                |  |--------JPanel:BoxLayout--|

*   |         BorderLayout.CENTER                    |  |                          |

*   |         MapBean                             |  |    JCheckBox             |

*   |                                                |  |                          |

*   |                                                |  |    JLabel                |

*   |                                                |  |                          |

*   |                                                |  |                          |

*   |                                                |  |                          |

*   |                                                |  |                          |

*   |                                                |  |                          |

*   |                                                |  |                          |

*   "------------------------------------------------|-----------------------------|

*/

public void buildFrame() {

rightPanel = new JPanel();

mainPanel = new JPanel();

rightPanel.setLayout(new BoxLayout(rightPanel, BoxLayout.Y_AXIS));

addLayerButton = new JButton("Add Layer");

addLayerButton.addActionListener(this);

removeLayerButton = new JButton("Remove Layer");

removeLayerButton.addActionListener(this);

rightPanel.add(addLayerButton);

rightPanel.add(Box.createVerticalStrut(10));

rightPanel.add(removeLayerButton);

rightPanel.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));

mapBean = new MapBean();//AO中地图显示的bean，呵呵都写好了，省事

tocBean = new TOCBean();//AO中TOC控制的bean

toolbarBean = new ToolbarBean();

tocBean.setSize(new Dimension(200, 100));

toolbarBean.setSize(490, 20);

mainPanel.setLayout(new BorderLayout());

mainPanel.add(tocBean, BorderLayout.WEST);

mainPanel.add(rightPanel, BorderLayout.EAST);

mainPanel.add(toolbarBean, BorderLayout.NORTH);

mainPanel.add(mapBean, BorderLayout.CENTER);

mainPanel.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));

getContentPane().add(mainPanel, BorderLayout.CENTER);

}

/**Initializes control

*

*/

public void initControl() {

try {

//Set the Buddy

toolbarBean.setBuddyControl(mapBean);

tocBean.setBuddyControl(mapBean);

//Add tool bar items..

toolbarBean.addItem(new ControlsOpenDocCommand(), 0, 0, false, 0, esriCommandStyles.esriCommandStyleIconOnly); //open

toolbarBean.addItem(new ControlsMapZoomInTool(), 0, -1, true, 0, esriCommandStyles.esriCommandStyleIconAndText); //ZoomIn

toolbarBean.addItem(new ControlsMapZoomOutTool(), 0, -1, false, 0, esriCommandStyles.esriCommandStyleIconAndText); //ZoomOut

toolbarBean.addItem(new ControlsMapPanTool(), 0, -1, false, 0, esriCommandStyles.esriCommandStyleIconAndText); //Pan

toolbarBean.addItem(new ControlsMapFullExtentCommand(), 0, -1, true, 20, esriCommandStyles.esriCommandStyleTextOnly); //FullExtent

}

catch (IOException ex) {

System.out.println("Exception in initControl : " + ex);

ex.printStackTrace();

}

}

/**@see java.awt.event.ActionListener#actionPerformed(ActionEvent event)

* @param event

*/

public void actionPerformed(ActionEvent event) {

if(event.getSource() == addLayerButton) {

try {

if (!loadFile()) return;

}

catch (IOException ex) {

System.out.println(

"Exception in addLayerButton#actionPerformed" + ex);

ex.printStackTrace();

}

}

if(event.getSource() == removeLayerButton) {

try {

//Check if control has any layer

if (mapBean.getLayerCount() > 0) {

RemoveLayerDialog dialog = new RemoveLayerDialog();

dialog.show();

}

}

catch (IOException ex1) {

System.out.println(

"Exception in removeLayerButton#actionPerformed" + ex1);

ex1.printStackTrace();

}

}

}

/**

* Method loadFile loads the specified mxd file

*

*/

public boolean loadFile() throws IOException {

//Open a JFileChooser for selecting PMF documents

JFileChooser chooser = new JFileChooser();

chooser.setFileFilter(new FileFilter() {

public boolean accept(File f) {

return (f.isDirectory() ||

f.getAbsolutePath().toUpperCase().endsWith(".LYR"));

}

public String getDescription() {

return "Layer Documents(*.lyr)";

}

});

boolean loaded = false;

int returnVal = 0;

returnVal = chooser.showOpenDialog(null);

if (returnVal == JFileChooser.APPROVE_OPTION) {

String fileChosen =

chooser.getCurrentDirectory()

+ File.separator

+ chooser.getSelectedFile().getName();

System.out.println("File picked: [" + fileChosen + "]");

//check if the selected layer document can be loaded into MapBean

try {

mapBean.addLayerFromFile(fileChosen, 0);

} catch(Exception ex) {

}

loaded = true;

System.out.println("Layer Added");

}

return loaded;

}

/**

* This class is used to create a dialog to remove a layer

* It displays a drop down with list of all the layers that are currently being added to mapcontrol

* and a removeLayer button

*/

class RemoveLayerDialog extends JDialog implements ActionListener {

JComboBox layerCombo = new JComboBox();

JButton removeButton = new JButton("RemoveLayer");

JButton cancel = new JButton("Cancel");

JPanel mainPanel = new JPanel(new BorderLayout());

JPanel buttonPanel = new JPanel(new FlowLayout());

public RemoveLayerDialog() {

super(AddFeatureLayer.this, "Remove Layer");

setSize(300, 150);

removeButton.addActionListener(this);

updateLayerDropDown(layerCombo);

buttonPanel.add(removeButton);

buttonPanel.add(cancel);

mainPanel.add(layerCombo, BorderLayout.NORTH);

mainPanel.add(buttonPanel, BorderLayout.SOUTH);

mainPanel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));

getContentPane().add(mainPanel, BorderLayout.CENTER);

}

public void updateLayerDropDown(JComboBox layerCombo) {

//Get layer count

int layerCount = 0;

try {

layerCount = mapBean.getLayerCount();

}

catch (IOException ex1) {

}

// Add the map's layer names to a list

for (int i = 0; i < layerCount; i++) {

try {

ILayer layer = mapBean.getLayer(i);

String name = layer.getName();

layerCombo.addItem(name);

}

catch (IOException ex) {

}

}

}

/**@see java.awt.event.ActionListener#actionPerformed(ActionEvent event)

* @param event

*/

public void actionPerformed(ActionEvent event) {

if (event.getSource() == removeButton) {

try {

int layerIndex = layerCombo.getSelectedIndex();

mapBean.deleteLayer(layerIndex);

mapBean.refresh(esriViewDrawPhase.esriViewBackground, null, null);

//dispose the dialog

dispose();

}

catch (IOException ex) {

System.out.println(" Exception in PasswordDialog#okButton#actionPerformed " + ex);

ex.printStackTrace();

}

}

if (event.getSource() == cancel) {

//Dispose the password dialog

dispose();

}

}

}

/**

* Main program to start the program execution.

*

* @param s

*/

public static void main(String s[]) {

try {

EngineInitializer.initializeVisualBeans();

//Set the system look and feel

UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());

AoInitialize aoInit = new AoInitialize();

aoInit.initialize(esriLicenseProductCode.esriLicenseProductCodeEngine);

AddFeatureLayer addFeatureLayer = new AddFeatureLayer();

addFeatureLayer.setDefaultCloseOperation(AddFeatureLayer.EXIT_ON_CLOSE);

}

catch (Exception ex) {

ex.printStackTrace();

}

}

}