The document defines a NewPostForm class that is used to create new posts in a Facebook clone app. The class initializes the user interface for composing posts, including a text area for the post content and options for adding images, videos or other styles. It also handles uploading attachments and submitting the new post to the server.

1. Creating a Facebook Clone - Part XLI

2. public class NewPostForm extends Form {
private static final String[] POST_STYLES = {
"Label", "PostStyleHearts", "PostStyleHands", "PostStyleBlack",
"PostStyleRed", "PostStylePurple" };
private TextArea post = new TextArea(3, 80);
private String postStyleValue;
private String attachment;
private String mime;
private Button postButton;
private NewPostForm() {
super("Create Post", new BorderLayout());
}
private void initUI(Container postStyles) {
Form current = getCurrentForm();
getToolbar().setBackCommand("Cancel",
Toolbar.BackCommandPolicy.
WHEN_USES_TITLE_OTHERWISE_ARROW,
e -> current.showBack());
Command c = getToolbar().addMaterialCommandToRightBar("",
FontImage.MATERIAL_DONE, e -> post(current));
NewPostForm

3. public class NewPostForm extends Form {
private static final String[] POST_STYLES = {
"Label", "PostStyleHearts", "PostStyleHands", "PostStyleBlack",
"PostStyleRed", "PostStylePurple" };
private TextArea post = new TextArea(3, 80);
private String postStyleValue;
private String attachment;
private String mime;
private Button postButton;
private NewPostForm() {
super("Create Post", new BorderLayout());
}
private void initUI(Container postStyles) {
Form current = getCurrentForm();
getToolbar().setBackCommand("Cancel",
Toolbar.BackCommandPolicy.
WHEN_USES_TITLE_OTHERWISE_ARROW,
e -> current.showBack());
Command c = getToolbar().addMaterialCommandToRightBar("",
FontImage.MATERIAL_DONE, e -> post(current));
NewPostForm

4. public class NewPostForm extends Form {
private static final String[] POST_STYLES = {
"Label", "PostStyleHearts", "PostStyleHands", "PostStyleBlack",
"PostStyleRed", "PostStylePurple" };
private TextArea post = new TextArea(3, 80);
private String postStyleValue;
private String attachment;
private String mime;
private Button postButton;
private NewPostForm() {
super("Create Post", new BorderLayout());
}
private void initUI(Container postStyles) {
Form current = getCurrentForm();
getToolbar().setBackCommand("Cancel",
Toolbar.BackCommandPolicy.
WHEN_USES_TITLE_OTHERWISE_ARROW,
e -> current.showBack());
Command c = getToolbar().addMaterialCommandToRightBar("",
FontImage.MATERIAL_DONE, e -> post(current));
NewPostForm

5. public class NewPostForm extends Form {
private static final String[] POST_STYLES = {
"Label", "PostStyleHearts", "PostStyleHands", "PostStyleBlack",
"PostStyleRed", "PostStylePurple" };
private TextArea post = new TextArea(3, 80);
private String postStyleValue;
private String attachment;
private String mime;
private Button postButton;
private NewPostForm() {
super("Create Post", new BorderLayout());
}
private void initUI(Container postStyles) {
Form current = getCurrentForm();
getToolbar().setBackCommand("Cancel",
Toolbar.BackCommandPolicy.
WHEN_USES_TITLE_OTHERWISE_ARROW,
e -> current.showBack());
Command c = getToolbar().addMaterialCommandToRightBar("",
FontImage.MATERIAL_DONE, e -> post(current));
NewPostForm

6. BoxLayout.encloseY(
new Label(me.fullName(), "MultiLine1"),
FlowLayout.encloseIn(friends)));
add(NORTH, userSettings);
post.setUIID("Label");
post.setGrowByContent(false);
Component l;
if(postStyles != null) {
l = LayeredLayout.encloseIn(
BorderLayout.north(post), postStyles);
} else {
l = post;
}
add(CENTER, l);
setEditOnShow(post);
}
public static NewPostForm createPost() {
NewPostForm n = new NewPostForm();
Container postStyles = n.createPostStyles(n.post);
n.initUI(BorderLayout.south(postStyles));
return n;
}
NewPostForm

7. BoxLayout.encloseY(
new Label(me.fullName(), "MultiLine1"),
FlowLayout.encloseIn(friends)));
add(NORTH, userSettings);
post.setUIID("Label");
post.setGrowByContent(false);
Component l;
if(postStyles != null) {
l = LayeredLayout.encloseIn(
BorderLayout.north(post), postStyles);
} else {
l = post;
}
add(CENTER, l);
setEditOnShow(post);
}
public static NewPostForm createPost() {
NewPostForm n = new NewPostForm();
Container postStyles = n.createPostStyles(n.post);
n.initUI(BorderLayout.south(postStyles));
return n;
}
NewPostForm

8. private NewPostForm() {
super("Create Post", new BorderLayout());
}
private void initUI(Container postStyles) {
Form current = getCurrentForm();
getToolbar().setBackCommand("Cancel",
Toolbar.BackCommandPolicy.
WHEN_USES_TITLE_OTHERWISE_ARROW,
e -> current.showBack());
Command c = getToolbar().addMaterialCommandToRightBar("",
FontImage.MATERIAL_DONE, e -> post(current));
postButton = getToolbar().findCommandComponent(c);
User me = ServerAPI.me();
Container userSettings = BorderLayout.west(
new Label(me.getAvatar(6.5f), "HalfPaddedContainer"));
Button friends = new Button("Friends", "FriendCombo");
FontImage.setMaterialIcon(friends, FontImage.MATERIAL_PEOPLE);
userSettings.add(CENTER,
BoxLayout.encloseY(
new Label(me.fullName(), "MultiLine1"),
FlowLayout.encloseIn(friends)));
add(NORTH, userSettings);
post.setUIID("Label");
NewPostForm

9. private NewPostForm() {
super("Create Post", new BorderLayout());
}
private void initUI(Container postStyles) {
Form current = getCurrentForm();
getToolbar().setBackCommand("Cancel",
Toolbar.BackCommandPolicy.
WHEN_USES_TITLE_OTHERWISE_ARROW,
e -> current.showBack());
Command c = getToolbar().addMaterialCommandToRightBar("",
FontImage.MATERIAL_DONE, e -> post(current));
postButton = getToolbar().findCommandComponent(c);
User me = ServerAPI.me();
Container userSettings = BorderLayout.west(
new Label(me.getAvatar(6.5f), "HalfPaddedContainer"));
Button friends = new Button("Friends", "FriendCombo");
FontImage.setMaterialIcon(friends, FontImage.MATERIAL_PEOPLE);
userSettings.add(CENTER,
BoxLayout.encloseY(
new Label(me.fullName(), "MultiLine1"),
FlowLayout.encloseIn(friends)));
add(NORTH, userSettings);
post.setUIID("Label");
NewPostForm

10. FontImage.MATERIAL_DONE, e -> post(current));
postButton = getToolbar().findCommandComponent(c);
User me = ServerAPI.me();
Container userSettings = BorderLayout.west(
new Label(me.getAvatar(6.5f), "HalfPaddedContainer"));
Button friends = new Button("Friends", "FriendCombo");
FontImage.setMaterialIcon(friends, FontImage.MATERIAL_PEOPLE);
userSettings.add(CENTER,
BoxLayout.encloseY(
new Label(me.fullName(), "MultiLine1"),
FlowLayout.encloseIn(friends)));
add(NORTH, userSettings);
post.setUIID("Label");
post.setGrowByContent(false);
Component l;
if(postStyles != null) {
l = LayeredLayout.encloseIn(
BorderLayout.north(post), postStyles);
} else {
l = post;
}
add(CENTER, l);
setEditOnShow(post);
}
NewPostForm

11. n.initUI(BorderLayout.south(postStyles));
return n;
}
public static NewPostForm createImagePost(EncodedImage img,
ImagePicker p) {
NewPostForm n = new NewPostForm();
n.initUI(null);
n.mime = "image/jpeg";
ScaleImageLabel i = new ScaleImageLabel(img) {
@Override
protected Dimension calcPreferredSize() {
return new Dimension(getDisplayWidth(),
getDisplayHeight() / 2);
}
};
Slider s = n.upload(p);
n.add(SOUTH, LayeredLayout.encloseIn(
i, BorderLayout.south(s)));
return n;
}
public static NewPostForm createVideoPost(Media m, ImagePicker p) {
NewPostForm n = new NewPostForm();
NewPostForm

12. n.initUI(BorderLayout.south(postStyles));
return n;
}
public static NewPostForm createImagePost(EncodedImage img,
ImagePicker p) {
NewPostForm n = new NewPostForm();
n.initUI(null);
n.mime = "image/jpeg";
ScaleImageLabel i = new ScaleImageLabel(img) {
@Override
protected Dimension calcPreferredSize() {
return new Dimension(getDisplayWidth(),
getDisplayHeight() / 2);
}
};
Slider s = n.upload(p);
n.add(SOUTH, LayeredLayout.encloseIn(
i, BorderLayout.south(s)));
return n;
}
public static NewPostForm createVideoPost(Media m, ImagePicker p) {
NewPostForm n = new NewPostForm();
NewPostForm

13. n.initUI(BorderLayout.south(postStyles));
return n;
}
public static NewPostForm createImagePost(EncodedImage img,
ImagePicker p) {
NewPostForm n = new NewPostForm();
n.initUI(null);
n.mime = "image/jpeg";
ScaleImageLabel i = new ScaleImageLabel(img) {
@Override
protected Dimension calcPreferredSize() {
return new Dimension(getDisplayWidth(),
getDisplayHeight() / 2);
}
};
Slider s = n.upload(p);
n.add(SOUTH, LayeredLayout.encloseIn(
i, BorderLayout.south(s)));
return n;
}
public static NewPostForm createVideoPost(Media m, ImagePicker p) {
NewPostForm n = new NewPostForm();
NewPostForm

14. n.initUI(BorderLayout.south(postStyles));
return n;
}
public static NewPostForm createImagePost(EncodedImage img,
ImagePicker p) {
NewPostForm n = new NewPostForm();
n.initUI(null);
n.mime = "image/jpeg";
ScaleImageLabel i = new ScaleImageLabel(img) {
@Override
protected Dimension calcPreferredSize() {
return new Dimension(getDisplayWidth(),
getDisplayHeight() / 2);
}
};
Slider s = n.upload(p);
n.add(SOUTH, LayeredLayout.encloseIn(
i, BorderLayout.south(s)));
return n;
}
public static NewPostForm createVideoPost(Media m, ImagePicker p) {
NewPostForm n = new NewPostForm();
NewPostForm

15. n.initUI(BorderLayout.south(postStyles));
return n;
}
public static NewPostForm createImagePost(EncodedImage img,
ImagePicker p) {
NewPostForm n = new NewPostForm();
n.initUI(null);
n.mime = "image/jpeg";
ScaleImageLabel i = new ScaleImageLabel(img) {
@Override
protected Dimension calcPreferredSize() {
return new Dimension(getDisplayWidth(),
getDisplayHeight() / 2);
}
};
Slider s = n.upload(p);
n.add(SOUTH, LayeredLayout.encloseIn(
i, BorderLayout.south(s)));
return n;
}
public static NewPostForm createVideoPost(Media m, ImagePicker p) {
NewPostForm n = new NewPostForm();
NewPostForm

16. n.initUI(BorderLayout.south(postStyles));
return n;
}
public static NewPostForm createImagePost(EncodedImage img,
ImagePicker p) {
NewPostForm n = new NewPostForm();
n.initUI(null);
n.mime = "image/jpeg";
ScaleImageLabel i = new ScaleImageLabel(img) {
@Override
protected Dimension calcPreferredSize() {
return new Dimension(getDisplayWidth(),
getDisplayHeight() / 2);
}
};
Slider s = n.upload(p);
n.add(SOUTH, LayeredLayout.encloseIn(
i, BorderLayout.south(s)));
return n;
}
public static NewPostForm createVideoPost(Media m, ImagePicker p) {
NewPostForm n = new NewPostForm();
NewPostForm

17. }
};
videoContainer.add(m.getVideoComponent());
videoContainer.add(BorderLayout.south(s));
n.add(SOUTH, videoContainer);
n.addShowListener(e -> {
m.play();
m.setVolume(0);
m.setTime(Math.min(m.getDuration() / 2, 1000));
m.pause();
});
return n;
}
private Slider upload(ImagePicker p) {
postButton.setEnabled(false);
Slider s = new Slider();
MultipartRequest m = p.upload(e -> {
attachment = e;
postButton.setEnabled(true);
});
SliderBridge.bindProgress(m, s);
return s;
}
NewPostForm

18. }
};
videoContainer.add(m.getVideoComponent());
videoContainer.add(BorderLayout.south(s));
n.add(SOUTH, videoContainer);
n.addShowListener(e -> {
m.play();
m.setVolume(0);
m.setTime(Math.min(m.getDuration() / 2, 1000));
m.pause();
});
return n;
}
private Slider upload(ImagePicker p) {
postButton.setEnabled(false);
Slider s = new Slider();
MultipartRequest m = p.upload(e -> {
attachment = e;
postButton.setEnabled(true);
});
SliderBridge.bindProgress(m, s);
return s;
}
NewPostForm

19. }
};
videoContainer.add(m.getVideoComponent());
videoContainer.add(BorderLayout.south(s));
n.add(SOUTH, videoContainer);
n.addShowListener(e -> {
m.play();
m.setVolume(0);
m.setTime(Math.min(m.getDuration() / 2, 1000));
m.pause();
});
return n;
}
private Slider upload(ImagePicker p) {
postButton.setEnabled(false);
Slider s = new Slider();
MultipartRequest m = p.upload(e -> {
attachment = e;
postButton.setEnabled(true);
});
SliderBridge.bindProgress(m, s);
return s;
}
NewPostForm

20. }
};
videoContainer.add(m.getVideoComponent());
videoContainer.add(BorderLayout.south(s));
n.add(SOUTH, videoContainer);
n.addShowListener(e -> {
m.play();
m.setVolume(0);
m.setTime(Math.min(m.getDuration() / 2, 1000));
m.pause();
});
return n;
}
private Slider upload(ImagePicker p) {
postButton.setEnabled(false);
Slider s = new Slider();
MultipartRequest m = p.upload(e -> {
attachment = e;
postButton.setEnabled(true);
});
SliderBridge.bindProgress(m, s);
return s;
}
NewPostForm

21. postButton.setEnabled(true);
});
SliderBridge.bindProgress(m, s);
return s;
}
private void post(Form previousForm) {
Dialog dlg = new InfiniteProgress().showInifiniteBlocking();
Post p = new Post().
content.set(post.getText()).
visibility.set("public").
styling.set(postStyleValue);
if(attachment != null) {
p.attachments.put(attachment, mime);
}
if(!ServerAPI.post(p)) {
dlg.dispose();
ToastBar.showErrorMessage("Error posting to server");
return;
}
previousForm.showBack();
}
private Container createPostStyles(TextArea post) {
NewPostForm

22. postButton.setEnabled(true);
});
SliderBridge.bindProgress(m, s);
return s;
}
private void post(Form previousForm) {
Dialog dlg = new InfiniteProgress().showInifiniteBlocking();
Post p = new Post().
content.set(post.getText()).
visibility.set("public").
styling.set(postStyleValue);
if(attachment != null) {
p.attachments.put(attachment, mime);
}
if(!ServerAPI.post(p)) {
dlg.dispose();
ToastBar.showErrorMessage("Error posting to server");
return;
}
previousForm.showBack();
}
private Container createPostStyles(TextArea post) {
NewPostForm

23. postButton.setEnabled(true);
});
SliderBridge.bindProgress(m, s);
return s;
}
private void post(Form previousForm) {
Dialog dlg = new InfiniteProgress().showInifiniteBlocking();
Post p = new Post().
content.set(post.getText()).
visibility.set("public").
styling.set(postStyleValue);
if(attachment != null) {
p.attachments.put(attachment, mime);
}
if(!ServerAPI.post(p)) {
dlg.dispose();
ToastBar.showErrorMessage("Error posting to server");
return;
}
previousForm.showBack();
}
private Container createPostStyles(TextArea post) {
NewPostForm

24. i, BorderLayout.south(s)));
return n;
}
public static NewPostForm createVideoPost(Media m, ImagePicker p) {
NewPostForm n = new NewPostForm();
n.initUI(null);
Slider s = n.upload(p);
n.mime = "video/mp4";
Container videoContainer = new Container(new LayeredLayout()) {
@Override
protected Dimension calcPreferredSize() {
return new Dimension(getDisplayWidth(),
getDisplayHeight() / 2);
}
};
videoContainer.add(m.getVideoComponent());
videoContainer.add(BorderLayout.south(s));
n.add(SOUTH, videoContainer);
n.addShowListener(e -> {
m.play();
m.setVolume(0);
m.setTime(Math.min(m.getDuration() / 2, 1000));
m.pause();
NewPostForm

25. i, BorderLayout.south(s)));
return n;
}
public static NewPostForm createVideoPost(Media m, ImagePicker p) {
NewPostForm n = new NewPostForm();
n.initUI(null);
Slider s = n.upload(p);
n.mime = "video/mp4";
Container videoContainer = new Container(new LayeredLayout()) {
@Override
protected Dimension calcPreferredSize() {
return new Dimension(getDisplayWidth(),
getDisplayHeight() / 2);
}
};
videoContainer.add(m.getVideoComponent());
videoContainer.add(BorderLayout.south(s));
n.add(SOUTH, videoContainer);
n.addShowListener(e -> {
m.play();
m.setVolume(0);
m.setTime(Math.min(m.getDuration() / 2, 1000));
m.pause();
NewPostForm

26. i, BorderLayout.south(s)));
return n;
}
public static NewPostForm createVideoPost(Media m, ImagePicker p) {
NewPostForm n = new NewPostForm();
n.initUI(null);
Slider s = n.upload(p);
n.mime = "video/mp4";
Container videoContainer = new Container(new LayeredLayout()) {
@Override
protected Dimension calcPreferredSize() {
return new Dimension(getDisplayWidth(),
getDisplayHeight() / 2);
}
};
videoContainer.add(m.getVideoComponent());
videoContainer.add(BorderLayout.south(s));
n.add(SOUTH, videoContainer);
n.addShowListener(e -> {
m.play();
m.setVolume(0);
m.setTime(Math.min(m.getDuration() / 2, 1000));
m.pause();
NewPostForm

27. public static NewPostForm createVideoPost(Media m, ImagePicker p) {
NewPostForm n = new NewPostForm();
n.initUI(null);
Slider s = n.upload(p);
n.mime = "video/mp4";
Container videoContainer = new Container(new LayeredLayout()) {
@Override
protected Dimension calcPreferredSize() {
return new Dimension(getDisplayWidth(),
getDisplayHeight() / 2);
}
};
videoContainer.add(m.getVideoComponent());
videoContainer.add(BorderLayout.south(s));
n.add(SOUTH, videoContainer);
n.addShowListener(e -> {
m.play();
m.setVolume(0);
m.setTime(Math.min(m.getDuration() / 2, 1000));
m.pause();
});
return n;
}
NewPostForm

28. public static NewPostForm createVideoPost(Media m, ImagePicker p) {
NewPostForm n = new NewPostForm();
n.initUI(null);
Slider s = n.upload(p);
n.mime = "video/mp4";
Container videoContainer = new Container(new LayeredLayout()) {
@Override
protected Dimension calcPreferredSize() {
return new Dimension(getDisplayWidth(),
getDisplayHeight() / 2);
}
};
videoContainer.add(m.getVideoComponent());
videoContainer.add(BorderLayout.south(s));
n.add(SOUTH, videoContainer);
n.addShowListener(e -> {
m.play();
m.setVolume(0);
m.setTime(Math.min(m.getDuration() / 2, 1000));
m.pause();
});
return n;
}
NewPostForm