Java 类com.google.gwt.dom.client.HeadingElement 实例源码

/**
 * Initializes HTMl elements (DIV and Canvas).<br>
 * It sets also some default behaviors (width in percentage) for resizing
 */
public AbstractChart() {
    // creates DIV
    div = Document.get().createDivElement();
    div.setId(id);
    // sets relative position
    div.getStyle().setPosition(Position.RELATIVE);
    // sets default width values
    div.getStyle().setWidth(DEFAULT_PCT_WIDTH, Unit.PCT);
    div.getStyle().setHeight(100, Unit.PCT);
    // checks if canvas is supported
    if (isCanvasSupported) {
        // creates a canvas and add to DIV
        canvas = Document.get().createCanvasElement();
        div.appendChild(canvas);
    } else {
        // creates a header element
        HeadingElement h = Document.get().createHElement(3);
        // to show the error message
        // because canvas is not supported
        h.setInnerText(CANVAS_NOT_SUPPORTED_MESSAGE);
        div.appendChild(h);
        // resets canvas
        canvas = null;
    }
    // sets DIV as element of the widget
    setElement(div);
    // injects Chart.js java script source
    Injector.ensureInjected();
    // creates plugins container
    plugins = new Plugins(this);
    // creates global options
    options = new GlobalOptions(createGlobalOptions(getType().name()));
}

public static HeadingElement createHeading(int n, String value) {
    HeadingElement h = Document.get().createHElement(n);
    h.setInnerHTML(value);
    return h;
}

private void updatePreview () {
    pnlPreview.getElement().removeAllChildren();

    Document d = Document.get();
    HeadingElement title = d.createHElement(1);

    title.setInnerHTML(PostHelper.makeHeading(txtTitle.getValue()));
    pnlPreview.getElement().appendChild(title);

    User user = SessionController.get().user();

    DivElement elDate = d.createDivElement();
    if (post != null) {
        if (post.published == null) {
            elDate.setInnerSafeHtml(PostSummaryCell.Templates.INSTANCE
                    .notPublished(DateTimeHelper.ago(post.created)));
        } else {
            elDate.setInnerSafeHtml(PostSummaryCell.Templates.INSTANCE
                    .publishedDate(DateTimeHelper.ago(post.published)));
        }
    } else {
        elDate.setInnerSafeHtml(PostSummaryCell.Templates.INSTANCE
                .notPublished(DateTimeHelper.ago(new Date())));
    }

    pnlPreview.getElement().appendChild(elDate);

    DivElement elAuthor = d.createDivElement();
    if (PropertyController.get()
            .booleanProperty(PropertyHelper.POST_SHOW_AUTHOR, false)) {
        elAuthor.setInnerSafeHtml(PostSummaryCell.Templates.INSTANCE.author(
                UriUtils.fromString(
                        (post != null ? post.author.avatar : user.avatar)
                                + "?s=" + UserHelper.AVATAR_HEADER_SIZE
                                + "&default=retro"),
                UserHelper.handle((post != null ? post.author : user))));
    }

    pnlPreview.getElement().appendChild(elAuthor);

    tagList.getList().clear();
    List<String> tags = TagHelper.convertToTagList(txtTags.getValue());
    if (tags != null) {
        for (String tag : tags) {
            tagList.getList().add(new Tag().name(tag));
        }
    }

    DivElement summary = d.createDivElement();
    summary.setInnerHTML(markup(txtSummary));
    pnlPreview.getElement().appendChild(summary);

    DivElement content = d.createDivElement();
    content.setInnerHTML(markup(txtContent));
    pnlPreview.getElement().appendChild(content);
}