/**
* Generates and returns the ZK specific HTML tags such as stylesheet and JavaScript.
*
* <p>For each desktop, we have to generate a set of HTML tags to load ZK Client engine, style
* sheets and so on. For ZUL pages, it is generated automatically by page.dsp. However, for ZHTML
* pages, we have to generate these tags with special component such as org.zkoss.zhtml.Head, such
* that the result HTML page is legal.
*
* @param exec the execution (never null)
* @return the string holding the HTML tags, or null if already generated.
* @param wapp the Web application. If null, exec.getDesktop().getWebApp() is used. So you have to
* specify it if the execution is not associated with desktop (a fake execution, such as
* JSP/DSP).
* @param deviceType the device type, such as ajax. If null, exec.getDesktop().getDeviceType() is
* used. So you have to specify it if the execution is not associated with desktop (a fake
* execution).
* @see #outHeaderZkTags
*/
public static String outZkTags(Execution exec, WebApp wapp, String deviceType) {
if (exec.getAttribute(ATTR_ZK_TAGS_GENERATED) != null) return null;
exec.setAttribute(ATTR_ZK_TAGS_GENERATED, Boolean.TRUE);
final StringBuffer sb =
new StringBuffer(512)
.append('\n')
.append(outLangStyleSheets(exec, wapp, deviceType))
.append(outLangJavaScripts(exec, wapp, deviceType));
final Desktop desktop = exec.getDesktop();
if (desktop != null && exec.getAttribute(ATTR_DESKTOP_JS_GENED) == null) {
sb.append("<script class=\"z-runonce\" type=\"text/javascript\">\nzkdt('")
.append(desktop.getId())
.append("','")
.append(getContextURI(exec))
.append("','")
.append(desktop.getUpdateURI(null))
.append("','")
.append(desktop.getRequestPath())
.append("');")
.append(outSpecialJS(desktop))
.append("\n</script>\n");
}
return sb.toString();
}
// @Override
public void render(Page page, Writer out) throws IOException {
final Desktop desktop = _exec.getDesktop();
out.write("<script type=\"text/javascript\">zkpb('");
out.write(page.getUuid());
out.write("','");
out.write(desktop.getId());
out.write("','");
out.write(getContextURI());
out.write("','");
out.write(desktop.getUpdateURI(null));
out.write("','");
out.write(desktop.getRequestPath());
out.write('\'');
String style = page.getStyle();
if (style != null && style.length() > 0) {
out.write(",{style:'");
out.write(style);
out.write("'}");
}
out.write(");zkpe();</script>\n");
for (Component root = page.getFirstRoot(); root != null; root = root.getNextSibling()) {
// HtmlPageRenders.outStandalone(_exec, root, out);
}
}
/**
* Returns the HTML content representing a page.
*
* @param au whether it is caused by asynchronous update
* @param exec the execution (never null)
*/
public static final void outPageContent(Execution exec, Page page, Writer out, boolean au)
throws IOException {
final Desktop desktop = page.getDesktop();
final PageCtrl pageCtrl = (PageCtrl) page;
final Component owner = pageCtrl.getOwner();
boolean contained = owner == null && exec.isIncluded();
// a standalone page (i.e., no owner), and being included by
// non-ZK page (e.g., JSP).
//
// Revisit Bug 2001707: OK to use exec.isIncluded() since
// we use PageRenderer now (rather than Servlet's include)
// TODO: test again
// prepare style
String style = page.getStyle();
if (style == null || style.length() == 0) {
style = null;
String wd = null, hgh = null;
if (owner instanceof HtmlBasedComponent) {
final HtmlBasedComponent hbc = (HtmlBasedComponent) owner;
wd = hbc.getWidth(); // null if not set
hgh = hbc.getHeight(); // null if not set
}
if (wd != null || hgh != null || contained) {
final StringBuffer sb = new StringBuffer(32);
HTMLs.appendStyle(sb, "width", wd != null ? wd : "100%");
HTMLs.appendStyle(sb, "height", hgh != null ? hgh : contained ? null : "100%");
style = sb.toString();
}
}
RenderContext rc = null, old = null;
final boolean aupg = exec.isAsyncUpdate(page); // AU this page
final boolean includedAndPart = owner != null && !aupg;
// this page is included and rendered with its owner
final boolean divRequired = !au || includedAndPart;
final boolean standalone = !au && owner == null;
if (standalone) {
rc =
new RenderContext(
out, new StringWriter(), desktop.getWebApp().getConfiguration().isCrawlable(), false);
setRenderContext(exec, rc);
} else if (owner != null) {
old = getRenderContext(exec); // store
final boolean crawlable =
old != null && old.temp != null && desktop.getWebApp().getConfiguration().isCrawlable();
setRenderContext(exec, crawlable ? new RenderContext(old.temp, null, true, true) : null);
}
// generate div first
if (divRequired) {
outDivTemplateBegin(out, page.getUuid());
}
if (standalone) { // switch out
// don't call outDivTemplateEnd yet since rc.temp will be generated before it
out = new StringWriter();
} else if (divRequired) {
outDivTemplateEnd(page, out); // close it now since no rc.temp
}
if (includedAndPart) {
out = new StringWriter();
} else if (divRequired) {
// generate JS second
out.write("\n<script class=\"z-runonce\" type=\"text/javascript\">\n");
}
exec.setAttribute(ATTR_DESKTOP_JS_GENED, Boolean.TRUE);
final int order = ComponentRedraws.beforeRedraw(false);
final String extra;
try {
if (order < 0) {
if (aupg) out.write('[');
else {
out.write(outSpecialJS(desktop));
out.write(divRequired ? "zkmx(" : "zkx(");
}
} else if (order > 0) // not first child
out.write(',');
out.write("\n[0,'"); // 0: page
out.write(page.getUuid());
out.write("',{");
final StringBuffer props = new StringBuffer(128);
final String pgid = page.getId();
if (pgid.length() > 0) appendProp(props, "id", pgid);
if (owner != null) {
appendProp(props, "ow", owner.getUuid());
} else {
appendProp(props, "dt", desktop.getId());
appendProp(props, "cu", getContextURI(exec));
appendProp(props, "uu", desktop.getUpdateURI(null));
appendProp(props, "ru", desktop.getRequestPath());
}
final String pageWgtCls = pageCtrl.getWidgetClass();
if (pageWgtCls != null) appendProp(props, "wc", pageWgtCls);
if (style != null) appendProp(props, "style", style);
if (!isClientROD(page)) appendProp(props, "z$rod", Boolean.FALSE);
if (contained) appendProp(props, "ct", Boolean.TRUE);
out.write(props.toString());
out.write("},[");
for (Component root = page.getFirstRoot(); root != null; root = root.getNextSibling())
((ComponentCtrl) root).redraw(out);
out.write("]]");
} finally {
extra = ComponentRedraws.afterRedraw();
}
if (order < 0) {
outEndJavaScriptFunc(exec, out, extra, aupg);
}
if (standalone) {
setRenderContext(exec, null);
StringBuffer sw = ((StringWriter) out).getBuffer();
out = rc.temp;
if (divRequired) outDivTemplateEnd(page, out);
// close tag after temp, but before perm (so perm won't be destroyed)
Files.write(out, ((StringWriter) rc.perm).getBuffer()); // perm
// B65-ZK-1836
Files.write(
out, new StringBuffer(sw.toString().replaceAll("</(?i)(?=script>)", "<\\\\/"))); // js
} else if (owner != null) { // restore
setRenderContext(exec, old);
}
if (includedAndPart) {
((Includer) owner).setRenderingResult(((StringWriter) out).toString());
} else if (divRequired) {
out.write("\n</script>\n");
}
}