@Override
protected void writeLayer(
SlingHttpServletRequest req, SlingHttpServletResponse resp, ImageContext c, Layer layer)
throws IOException, RepositoryException {
Image image = new Image(c.resource);
if (!image.hasContent()) {
resp.sendError(HttpServletResponse.SC_NOT_FOUND);
return;
}
// get style and set constraints
image.loadStyleData(c.style);
// get pure layer
layer = image.getLayer(false, false, false);
boolean modified = false;
if (layer != null) {
// crop
modified = image.crop(layer) != null;
// rotate
modified |= image.rotate(layer) != null;
// resize
modified |= image.resize(layer) != null;
// apply diff if needed (because we create the layer inline)
modified |= applyDiff(layer, c);
}
// don't cache images on authoring instances
// Cache-Control: no-cache allows caching (e.g. in the browser cache) but
// will force revalidation using If-Modified-Since or If-None-Match every time,
// avoiding aggressive browser caching
if (!WCMMode.DISABLED.equals(WCMMode.fromRequest(req))) {
resp.setHeader("Cache-Control", "no-cache");
}
if (modified) {
String mimeType = image.getMimeType();
if (ImageHelper.getExtensionFromType(mimeType) == null) {
// get default mime type
mimeType = "image/png";
}
resp.setContentType(mimeType);
layer.write(mimeType, mimeType.equals("image/gif") ? 255 : 1.0, resp.getOutputStream());
} else {
// do not re-encode layer, just spool
Property data = image.getData();
InputStream in = data.getStream();
resp.setContentLength((int) data.getLength());
resp.setContentType(image.getMimeType());
IOUtils.copy(in, resp.getOutputStream());
in.close();
}
resp.flushBuffer();
}
String getScript(SlingHttpServletRequest request, UserProperties userProperties) {
SlingBindings bindings = (SlingBindings) request.getAttribute(SlingBindings.class.getName());
XSSAPI xssAPI = bindings.getSling().getService(XSSAPI.class).getRequestSpecificAPI(request);
StringBuilder res = new StringBuilder();
boolean isDisabled = WCMMode.fromRequest(request).equals(WCMMode.DISABLED);
res.append("<input");
res.append(" id=\"").append(xssAPI.encodeForHTMLAttr(id)).append("\"");
res.append(" class=\"").append(xssAPI.encodeForHTMLAttr(clazz)).append("\"");
res.append(" type=\"").append(xssAPI.encodeForHTMLAttr(type)).append("\"");
res.append(" name=\"").append(xssAPI.encodeForHTMLAttr(name)).append("\"");
res.append("/>");
// change field upon ccm changes in author mode, listening for store 'update' events
if (!isDisabled) {
res.append("<script type=\"text/javascript\">");
res.append("if( window.CQ_Analytics && CQ_Analytics.CCM) {");
res.append("$CQ(function() {");
res.append(
"var store = CQ_Analytics.CCM.getRegisteredStore(CQ_Analytics.ProfileDataMgr.STORENAME);");
res.append("if(store) {");
res.append("var name = store.getProperty('")
.append(xssAPI.encodeForJSString(propertyName))
.append("', true) || '';");
res.append("var el = document.getElementById('")
.append(xssAPI.encodeForJSString(id))
.append("');");
res.append("if( el) {");
res.append("el.value = name;");
res.append("}");
res.append("}");
res.append("CQ_Analytics.CCM.addListener('storesloaded', function() {");
res.append(
"var store = CQ_Analytics.CCM.getRegisteredStore(CQ_Analytics.ProfileDataMgr.STORENAME);");
res.append("if(store && store.addListener) {");
res.append("var name = store.getProperty('")
.append(xssAPI.encodeForJSString(propertyName))
.append("', true) || '';");
res.append("var el = document.getElementById('")
.append(xssAPI.encodeForJSString(id))
.append("');");
res.append("if( el) {");
res.append("el.value = name;");
res.append("}");
res.append("store.addListener('update', function() {");
res.append("var name = store.getProperty('")
.append(xssAPI.encodeForJSString(propertyName))
.append("', true) || '';");
res.append("var el = document.getElementById('")
.append(xssAPI.encodeForJSString(id))
.append("');");
res.append("if( el) {");
res.append("el.value = name;");
res.append("}");
res.append("});");
res.append("}");
res.append("});");
res.append("});");
res.append("}");
res.append("</script>");
}
// slightly different here, because there is no store 'update' event
else {
res.append("<script type=\"text/javascript\">");
res.append("if( window.CQ_Analytics && CQ_Analytics.CCM) {");
res.append("$CQ(function() {");
res.append(
"var store = CQ_Analytics.CCM.getRegisteredStore(CQ_Analytics.ProfileDataMgr.STORENAME);");
res.append("if(store) {");
res.append("var name = store.getProperty('")
.append(xssAPI.encodeForJSString(propertyName))
.append("', true) || '';");
res.append("var el = document.getElementById('")
.append(xssAPI.encodeForJSString(id))
.append("');");
res.append("if( el) {");
res.append("el.value = name;");
res.append("}");
res.append("}");
res.append("CQ_Analytics.CCM.addListener('storesloaded', function() {");
res.append(
"var store = CQ_Analytics.CCM.getRegisteredStore(CQ_Analytics.ProfileDataMgr.STORENAME);");
res.append("if(store) {");
res.append("var name = store.getProperty('")
.append(xssAPI.encodeForJSString(propertyName))
.append("', true) || '';");
res.append("var el = document.getElementById('")
.append(xssAPI.encodeForJSString(id))
.append("');");
res.append("if( el) {");
res.append("el.value = name;");
res.append("}");
res.append("}");
res.append("});");
res.append("});");
res.append("}");
res.append("</script>");
}
return res.toString();
}
