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workspace-tree-widget
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changed the business logic to show the preview on files

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task/19600
Francesco Mangiacrapa 4 years ago
parent aec8ae3332
commit 2e6b3d031f
1 changed files with 104 additions and 86 deletions
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190
src/main/java/org/gcube/portlets/user/workspace/client/view/windows/DialogGetInfoBootstrap.java
Unescape Escape View File

@ -62,7 +62,7 @@ import com.google.gwt.user.server.Base64Utils;
*/
public class DialogGetInfoBootstrap extends Composite {
private static final int PREVIEW_WAITING_TIME = 10000;
private static final int PREVIEW_WAITING_TIME = 9000; //9 sec
private static DialogGetInfoBootstrapUiBinder uiBinder = GWT.create(DialogGetInfoBootstrapUiBinder.class);
@ -196,6 +196,10 @@ public class DialogGetInfoBootstrap extends Composite {
private Image spinnerImage = Resources.getIconLoading().createImage();
private Image noPreviewAvailable = new Image(Resources.getPreviewNotAvailable());
private Frame iFrameGDV = null;
private Timer timerGDV = null;
/**
* Instantiates a new dialog get info bootstrap.
@ -335,113 +339,127 @@ public class DialogGetInfoBootstrap extends Composite {
loadACLsDescriptionForSharedFolder(fileModel.getIdentifier());
}
boolean previewManaged = false;
if (typeEnum != null) {
// is it an image?
if (typeEnum.equals(GXTFolderItemTypeEnum.IMAGE_DOCUMENT)
|| typeEnum.equals(GXTFolderItemTypeEnum.EXTERNAL_IMAGE)) {
previewManaged = true;
loadThumbnailsForImage();
}
// is it a GCUBE-Item?
if (typeEnum.equals(GXTFolderItemTypeEnum.GCUBE_ITEM)) {
previewManaged = true; //preview not avaible for the type GCUBE_ITEM
loadGcubeItemProperties();
}
}
//If the preview is not managed
//through the previous code
//managing it by checking the mime-type
if(!previewManaged) {
// SOLUTION BASED ON GOOGLE DOC VIEWER
if (typeEnum.equals(GXTFolderItemTypeEnum.EXTERNAL_PDF_FILE)
|| typeEnum.equals(GXTFolderItemTypeEnum.PDF_DOCUMENT)
|| typeEnum.equals(GXTFolderItemTypeEnum.EXTERNAL_FILE)
|| typeEnum.equals(GXTFolderItemTypeEnum.GCUBE_ITEM)
|| typeEnum.equals(GXTFolderItemTypeEnum.URL_DOCUMENT)
|| typeEnum.equals(GXTFolderItemTypeEnum.METADATA)){
if (!fileModel.isDirectory() && mapAllowedMimeTypesForPreview.containsKey(fileModel.getType())) {
// SOLUTION BASED ON GOOGLE DOC VIEWER
GWT.log("Mime type " + fileModel.getType() + " allowed for preview, try to display it");
final HTML loadingPreviewHTML = new HTML();
setPlaceholder(loadingPreviewHTML, true, "loading preview...");
htmlPanelFilePreview.add(loadingPreviewHTML);
htmlPanelFilePreview.setVisible(true);
if(mapAllowedMimeTypesForPreview.containsKey(fileModel.getType())){
GWT.log("Mime type "+fileModel.getType()+" allowed for preview, try to display it");
AppControllerExplorer.rpcWorkspaceService.getPublicLinkForFileItemId(fileModel.getIdentifier(), false,
new AsyncCallback<PublicLink>() {
@Override
public void onFailure(Throwable caught) {
}
@Override
public void onSuccess(PublicLink result) {
GWT.log("The PublicLink link is: " + result);
if (result != null) {
//if file size is null or greater than 25MB
long byteTo25MB = 1024*1024*25;
GWT.log("The file size is: "+fileSize);
if(fileSize==null || fileSize>byteTo25MB) {
GWT.log("The file size is null or greater than "+byteTo25MB+", returning");
//htmlPanelFilePreview.add(new Image(Resources.getPreviewNotAvailable()));
return;
}
// String pdfPreview = "<iframe frameBorder=\"0\" class=\"my-preview-doc\" "
// + "src=\"https://docs.google.com/viewer?url="
// + URL.encode(result.getCompleteURL()) + "&embedded=true\">" + "</iframe>";
String googleDocViewerURL = "https://docs.google.com/viewer?url="
+ URL.encode(result.getCompleteURL()) + "&embedded=true";
final HTML loadingPreviewHTML = new HTML();
setPlaceholder(loadingPreviewHTML, true, "loading preview...");
final Frame frame = instanceFrame(googleDocViewerURL, loadingPreviewHTML);
final long startTime = new Date().getTime();
Timer timer = new Timer() {
@Override
public void run() {
GWT.log("Checking if the iFrameGoogleDocViewer is ready");
if(iFrameGoogleDocViewerLoaded) {
removePlaceHolder(loadingPreviewHTML);
GWT.log("iFrameGoogleDocViewer currently loaded, cancelling timer");
AppControllerExplorer.rpcWorkspaceService.getPublicLinkForFileItemId(fileModel.getIdentifier(), false,
new AsyncCallback<PublicLink>() {
@Override
public void onFailure(Throwable caught) {
removePlaceHolder(loadingPreviewHTML);
GWT.log("Error on loading the Public link for: "+fileModel.getIdentifier());
htmlPanelFilePreview.add(noPreviewAvailable);
htmlPanelFilePreview.setVisible(true);
}
@Override
public void onSuccess(PublicLink result) {
GWT.log("The PublicLink link is: " + result);
if (result != null) {
// if file size is null or greater than 25MB
long byteTo25MB = 1024 * 1024 * 25;
GWT.log("The file size is: " + fileSize);
if (fileSize == null || fileSize > byteTo25MB) {
GWT.log("The file size is null or greater than " + byteTo25MB + ", returning");
// htmlPanelFilePreview.add(new Image(Resources.getPreviewNotAvailable()));
return;
}
String googleDocViewerURL = "https://docs.google.com/viewer?url="
+ URL.encode(result.getCompleteURL()) + "&embedded=true";
iFrameGDV = instanceFrame(googleDocViewerURL, loadingPreviewHTML);
final long startTime = new Date().getTime();
timerGDV = new Timer() {
@Override
public void run() {
GWT.log("Checking if the iFrameGoogleDocViewer is ready");
if (iFrameGoogleDocViewerLoaded) {
removePlaceHolder(loadingPreviewHTML);
GWT.log("iFrameGoogleDocViewer currently loaded, cancelling timer");
cancel();
return;
}
long checkTime = new Date().getTime();
long diff = checkTime - startTime;
if (diff > PREVIEW_WAITING_TIME) {// is greater than 10 sec
try {
GWT.log("iFrameGoogleDocViewer not loaded within "+PREVIEW_WAITING_TIME+" sec, cancelling timer, removing iframe");
cancel();
return;
}
long checkTime = new Date().getTime();
long diff = checkTime - startTime;
if(diff>PREVIEW_WAITING_TIME) {//is greater than 10 sec
try {
GWT.log("iFrameGoogleDocViewer not loaded within 5 sec, cancelling timer, removing iframe");
cancel();
removePlaceHolder(loadingPreviewHTML);
htmlPanelFilePreview.add(noPreviewAvailable);
frame.setVisible(false);
htmlPanelFilePreview.remove(frame);
}catch (Exception e) {
//Silent
}
removePlaceHolder(loadingPreviewHTML);
htmlPanelFilePreview.add(noPreviewAvailable);
iFrameGDV.setVisible(false);
htmlPanelFilePreview.remove(iFrameGDV);
} catch (Exception e) {
// Silent
}
}
};
timer.scheduleRepeating(200);
htmlPanelFilePreview.add(loadingPreviewHTML);
htmlPanelFilePreview.add(frame);
htmlPanelFilePreview.setVisible(true);
}
}
};
timerGDV.scheduleRepeating(PREVIEW_WAITING_TIME/3);
htmlPanelFilePreview.add(iFrameGDV);
}
});
}else {
GWT.log("Mime type "+fileModel.getType()+" NOT allowed for preview, displaying 'No preview available'");
htmlPanelFilePreview.add(noPreviewAvailable);
htmlPanelFilePreview.setVisible(true);
}
}
});
} else {
GWT.log("Mime type " + fileModel.getType() + " NOT allowed for preview, displaying 'No preview available'");
htmlPanelFilePreview.add(noPreviewAvailable);
htmlPanelFilePreview.setVisible(true);
}
}
addHandlers();
}
@Override
protected void onDetach() {
super.onDetach();
GWT.log("Detached...");
htmlPanelFilePreview.clear();
if(timerGDV!=null) {
try {
timerGDV.cancel();
}catch (Exception e) {
// TODO: handle exception
}
}
}
public Frame instanceFrame(String fileURL, final HTML thePreviewPlaceholder) {
//addLoading();
String urlEncoded = URL.encode(fileURL);

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