Opening a PDF

src/main/java/org/luwrain/app/viewer/App.java

@@ -22,13 +22,17 @@
 import org.luwrain.core.*;
 import org.luwrain.core.events.*;
 import org.luwrain.controls.*;
+import org.luwrain.interaction.graphical.*;
 
-class App implements Application
+class App implements Application, Pdf.Listener
 {
  private Luwrain luwrain = null;
  private Strings strings = null;
  private NavigationArea area = null;
+
  private final File arg;
+ private Pdf pdf = null;
+ private String[] text = new String[0];
 
  App()
  {
@@ -58,11 +62,11 @@ private void createArea()
  this.area = new NavigationArea(new DefaultControlEnvironment(luwrain)) {
  @Override public String getLine(int index)
  {
- return "";
+ return index < text.length?text[index]:"";
  }
  @Override public int getLineCount()
  {
- return 1;
+ return text.length > 0?text.length:1;
  }
  @Override public boolean onInputEvent(KeyboardEvent event)
  {
@@ -86,30 +90,41 @@ private void createArea()
  case CLOSE:
  closeApp();
  return true;
- /*
- {
- try {
- luwrain.createPdfPreview((ev)->{
- return false;
- }, new File("/tmp/pr.pdf"));
- }
- catch(Exception e)
- {
- luwrain.crash(e);
- }
- return true;
- */
  default:
  return super.onSystemEvent(event);
  }
  }
- @Override public String getAreaName()
+  @Override public String getAreaName()
  {
- return arg.getName();
+ return arg != null?arg.getName():strings.appName();
  }
  };
  }
 
+ private void loadFile(File file)
+ {
+ NullCheck.notNull(file, "file");
+ try {
+ this.pdf = luwrain.createPdfPreview(this, file);
+ }
+ catch(Exception e)
+ {
+ this.text = new String[]{
+ "",
+ "ERROR:",
+ e.getClass().getName(),
+ e.getMessage(),
+ };
+ luwrain.onAreaNewContent(area);
+ }
+ }
+
+ @Override public boolean onInputEvent(KeyboardEvent event)
+ {
+ NullCheck.notNull(event, "event");
+ return false;
+ }
+
  @Override public void closeApp()
  {
  luwrain.closeApp();