清单6：StandaloneEditorAssembler.java
1 public class StandaloneEditorAssembler extends AbstractEditorAssembler {
2
3 private String compositeClassID;
4
5 private IEditorComposite bodyComposite;
6
7 /**
8
9 *
10
11 * @param compositeClassID
12
13 * :composite class qulified name，e.g. com.ibm..XXComposite;
14
15 */
16
17 public StandaloneEditorAssembler(String compositeClassID) {
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19 this.compositeClassID = compositeClassID;
20
21 }
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23 public void create(IEditorFacade editor) {
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25 bodyComposite = createComposite(editor， compositeClassID);
26
27 if (bodyComposite != null)
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29 bodyComposite.loadDataInfo();
30
31 }
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33 public void showPreInfo() {
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35 bodyComposite.showPreInfo();
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37 }
38
39 }
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41
2
3 private String compositeClassID;
4
5 private IEditorComposite bodyComposite;
6
7 /**
8
9 *
10
11 * @param compositeClassID
12
13 * :composite class qulified name，e.g. com.ibm..XXComposite;
14
15 */
16
17 public StandaloneEditorAssembler(String compositeClassID) {
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19 this.compositeClassID = compositeClassID;
20
21 }
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23 public void create(IEditorFacade editor) {
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25 bodyComposite = createComposite(editor， compositeClassID);
26
27 if (bodyComposite != null)
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29 bodyComposite.loadDataInfo();
30
31 }
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33 public void showPreInfo() {
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35 bodyComposite.showPreInfo();
36
37 }
38
39 }
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41
接下来，是 EditorCompositeFactory 的实现，这个类的实现比较简单，只是根据类名产生类：
清单7：EditorCompositeFactory.java
1 public class EditorCompositeFactory {
2
3 /**
4
5 * create IEditorComposite
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7 * @param clsName
8
9 * @param editor
10
11 * @return
12
13 */
14
15 public static IEditorComposite createComposite(String clsName，
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17 IEditorFacade editor) {
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19 IEditorComposite composite = null;
20
21 try {
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23 Class cls = Class.forName(clsName);
24
25 if (cls != null)
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27 composite = (IEditorComposite) cls.newInstance();
28
29 } catch (Exception e) {
30
31 e.printStackTrace();
32
33 }
34
35 if (composite != null) {
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37 composite.setEditor(editor);
38
39 }
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41 return composite;
42
43 }
44
45 }
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47
2
3 /**
4
5 * create IEditorComposite
6
7 * @param clsName
8
9 * @param editor
10
11 * @return
12
13 */
14
15 public static IEditorComposite createComposite(String clsName，
16
17 IEditorFacade editor) {
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19 IEditorComposite composite = null;
20
21 try {
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23 Class cls = Class.forName(clsName);
24
25 if (cls != null)
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27 composite = (IEditorComposite) cls.newInstance();
28
29 } catch (Exception e) {
30
31 e.printStackTrace();
32
33 }
34
35 if (composite != null) {
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37 composite.setEditor(editor);
38
39 }
40
41 return composite;
42
43 }
44
45 }
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47
最后，就是 EditorComposite 的实现了，很显然每个界面的 EditorComposite 都不一样，所以我们在这里只定义了一个接口来规范一下行为，具体的 EditorComposite 实现我会在代码附件中的测试包中给出。
清单8：IEditorComposite.java
1 public interface IEditorComposite {
2
3 /** set up composite UI */
4
5 public void create(Composite parent);
6
7 /** set the current editor for shell close and data set */
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9 public void setEditor(IEditorFacade editor);
10
11 /** show previous data information in UI */
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13 public void showPreInfo();
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15 public void loadDataInfo();
16
17 }
18
19
2
3 /** set up composite UI */
4
5 public void create(Composite parent);
6
7 /** set the current editor for shell close and data set */
8
9 public void setEditor(IEditorFacade editor);
10
11 /** show previous data information in UI */
12
13 public void showPreInfo();
14
15 public void loadDataInfo();
16
17 }
18
19
下面，我们编写一些测试代码来测试它，这个测试应用是要编写一个电话簿，为了简单起见我只定义了一个 EditorComposite-PhoneBookComposite， 在编写组装逻辑时也只是示例性地改变了一下界面的标题和尺寸。(详细代码见代码下载)
清单9：PhoneBookEditorAssembler.java
1 public void create(IEditorFacade editor) {
2
3 if (compositeType == 0) {
4
5 //it is a phone book.
6
7 bodyComposite = createComposite(editor， "test.PhoneBookComposite");
8
9 |-------10--------20--------30--------40--------50--------60--------70--------80--------9|
10
11 |-------- XML error: The previous line is longer than the max of 90 characters ---------|
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13 editor.getShell().setText("Phone Book");
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15 editor.getShell().setSize(400， 300);
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17 editor.getShell().redraw();
18
19 if (bodyComposite != null)
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21 bodyComposite.loadDataInfo();
22
23 } else if (compositeType == 1) {
24
25 //it is a memo book.
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27 bodyComposite = createComposite(editor， "test.PhoneBookComposite");
28
29 |-------10--------20--------30--------40--------50--------60--------70--------80--------9|
30
31 |-------- XML error: The previous line is longer than the max of 90 characters ---------|
32
33 editor.getShell().setText("Memo Book");
34
35 editor.getShell().setSize(500， 300);
36
37 editor.getShell().redraw();
38
39 if (bodyComposite != null)
40
41 bodyComposite.loadDataInfo();
42
43 }
44
45 }
46
47
2
3 if (compositeType == 0) {
4
5 //it is a phone book.
6
7 bodyComposite = createComposite(editor， "test.PhoneBookComposite");
8
9 |-------10--------20--------30--------40--------50--------60--------70--------80--------9|
10
11 |-------- XML error: The previous line is longer than the max of 90 characters ---------|
12
13 editor.getShell().setText("Phone Book");
14
15 editor.getShell().setSize(400， 300);
16
17 editor.getShell().redraw();
18
19 if (bodyComposite != null)
20
21 bodyComposite.loadDataInfo();
22
23 } else if (compositeType == 1) {
24
25 //it is a memo book.
26
27 bodyComposite = createComposite(editor， "test.PhoneBookComposite");
28
29 |-------10--------20--------30--------40--------50--------60--------70--------80--------9|
30
31 |-------- XML error: The previous line is longer than the max of 90 characters ---------|
32
33 editor.getShell().setText("Memo Book");
34
35 editor.getShell().setSize(500， 300);
36
37 editor.getShell().redraw();
38
39 if (bodyComposite != null)
40
41 bodyComposite.loadDataInfo();
42
43 }
44
45 }
46
47
清单10：Main.java
1 public static void main(String[] args) {
2
3 //定义PhoneBook EditorAssembler。
4
5 IEditorAssembler assembler = new PhoneBookEditorAssembler(0);
6
7 //定义PhoneBook 输入数据
8
9 IInputDataObject inputData = new PhoneBookInputDO("LYL"， "010-8000100");
10
11 //定义PhoneBook editor
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13 EditorFacade editor = new EditorFacade(assembler， inputData);
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15 editor.show();
16
17 if (editor.isFinishedOK()) {
18
19 //取出PhoneBook 输出数据。
20
21 if (editor.getOutputData() instanceof PhoneBookOutputDO) {
22
23 PhoneBookOutputDO outputData = (PhoneBookOutputDO) editor
24
25 .getOutputData();
26
27 String name = outputData.getName();
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29 String phone = outputData.getPhone();
30
31 System.out.println("name:" + name + "; phone:" + phone);
32
33 }
34
35 }
36
37 }
38
39
2
3 //定义PhoneBook EditorAssembler。
4
5 IEditorAssembler assembler = new PhoneBookEditorAssembler(0);
6
7 //定义PhoneBook 输入数据
8
9 IInputDataObject inputData = new PhoneBookInputDO("LYL"， "010-8000100");
10
11 //定义PhoneBook editor
12
13 EditorFacade editor = new EditorFacade(assembler， inputData);
14
15 editor.show();
16
17 if (editor.isFinishedOK()) {
18
19 //取出PhoneBook 输出数据。
20
21 if (editor.getOutputData() instanceof PhoneBookOutputDO) {
22
23 PhoneBookOutputDO outputData = (PhoneBookOutputDO) editor
24
25 .getOutputData();
26
27 String name = outputData.getName();
28
29 String phone = outputData.getPhone();
30
31 System.out.println("name:" + name + "; phone:" + phone);
32
33 }
34
35 }
36
37 }
38
39
接下来，我们可以看一下架构的实现模型，注意，我在画下面的 UML 图时采用了分层的方式，所有的接口都会在上面一层，实现在下面一层，这种分层画 UML 图的方法有助于我们理清架构的思路，也便于与开发组的其他成员沟通。
图5. 架构的实现模型
至此，我们完成了界面组装器的核心架构的实现，注意，这只是一种实现，并不是界面组装模式的全部，作为一种模式，它必须有更广的外延，下面我们将要探讨它的模式本质。
