Planning alternative JSON-UIDL implementation approach

svn changeset:1614/svn branch:trunk

1 files changed, 160 insertions, 0 deletions

diff --git a/src/com/itmill/toolkit/terminal/gwt/server/JSONPaintTarget.java b/src/com/itmill/toolkit/terminal/gwt/server/JSONPaintTarget.java
new file mode 100644
index 0000000000..eec686426d
--- /dev/null
+++ b/src/com/itmill/toolkit/terminal/gwt/server/JSONPaintTarget.java
@@ -0,0 +1,160 @@
+package com.itmill.toolkit.terminal.gwt.server;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.Stack;
+
+import com.itmill.toolkit.Application;
+import com.itmill.toolkit.terminal.ApplicationResource;
+import com.itmill.toolkit.terminal.ExternalResource;
+import com.itmill.toolkit.terminal.PaintException;
+import com.itmill.toolkit.terminal.PaintTarget;
+import com.itmill.toolkit.terminal.Paintable;
+import com.itmill.toolkit.terminal.Resource;
+import com.itmill.toolkit.terminal.ThemeResource;
+import com.itmill.toolkit.terminal.VariableOwner;
+
+public class JSONPaintTarget implements PaintTarget {
+
+	Stack tags = new Stack();
+	Tag tag = null;
+
+	public void addAttribute(String name, boolean value) throws PaintException {
+		tag.attrs.put(name, new Boolean(value));
+	}
+
+	public void addAttribute(String name, int value) throws PaintException {
+		tag.attrs.put(name, new Integer(value));
+	}
+
+	public void addAttribute(String name, Resource value) throws PaintException {
+		if (value instanceof ExternalResource) {
+			addAttribute(name, ((ExternalResource) value).getURL());
+
+		} else if (value instanceof ApplicationResource) {
+			ApplicationResource r = (ApplicationResource) value;
+			Application a = r.getApplication();
+			if (a == null)
+				throw new PaintException(
+						"Application not specified for resorce "
+								+ value.getClass().getName());
+			String uri = a.getURL().getPath();
+			if (uri.charAt(uri.length() - 1) != '/')
+				uri += "/";
+			uri += a.getRelativeLocation(r);
+			addAttribute(name, uri);
+
+		} else if (value instanceof ThemeResource) {
+			String uri = "theme://" + ((ThemeResource) value).getResourceId();
+			addAttribute(name, uri);
+		} else
+			throw new PaintException("Ajax adapter does not "
+					+ "support resources of type: "
+					+ value.getClass().getName());
+	}
+
+	public void addAttribute(String name, long value) throws PaintException {
+		tag.attrs.put(name, new Long(value));
+	}
+
+	public void addAttribute(String name, String value) throws PaintException {
+		tag.attrs.put(name, value);
+	}
+
+	public void addCharacterData(String text) throws PaintException {
+		if (tag.data != null || tag.xml != null || tag.children.size() > 0)
+			throw new IllegalStateException("Character data can not be combined with XML or child-nodes");
+		tag.data = text;
+	}
+
+	public void addSection(String sectionTagName, String sectionData)
+			throws PaintException {
+		Tag t = new Tag(sectionTagName);
+		t.data = sectionData;
+		if (tag.data != null || tag.xml != null)
+			throw new IllegalStateException("Children can not be combined with XML or chardata");
+		tag.children.add(t);
+	}
+
+	public void addText(String text) throws PaintException {
+		if (tag.data != null || tag.xml != null || tag.children.size() > 0)
+			throw new IllegalStateException("Text-data can not be combined with XML or child-nodes");
+		tag.data = text;
+	}
+
+	public void addUIDL(String uidl) throws PaintException {
+		if (tag.data != null || tag.xml != null || tag.children.size() > 0)
+			throw new IllegalStateException("XML can not be combined with text or child-nodes");
+		tag.xml = uidl;
+	}
+
+	public void addUploadStreamVariable(VariableOwner owner, String name)
+			throws PaintException {
+		// TODO Auto-generated method stub
+
+	}
+
+	public void addVariable(VariableOwner owner, String name, String value)
+			throws PaintException {
+		// TODO Auto-generated method stub
+
+	}
+
+	public void addVariable(VariableOwner owner, String name, int value)
+			throws PaintException {
+		// TODO Auto-generated method stub
+
+	}
+
+	public void addVariable(VariableOwner owner, String name, boolean value)
+			throws PaintException {
+		// TODO Auto-generated method stub
+
+	}
+
+	public void addVariable(VariableOwner owner, String name, String[] value)
+			throws PaintException {
+		// TODO Auto-generated method stub
+
+	}
+
+	public void addXMLSection(String sectionTagName, String sectionData,
+			String namespace) throws PaintException {
+		// TODO Auto-generated method stub
+
+	}
+
+	public void endTag(String tagName) throws PaintException {
+		
+	}
+
+	public boolean startTag(Paintable paintable, String tag)
+			throws PaintException {
+		// TODO Auto-generated method stub
+		return false;
+	}
+
+	public void startTag(String tagName) throws PaintException {
+		// TODO Auto-generated method stub
+
+	}
+
+	private class Tag {
+		HashMap attrs = new HashMap();
+
+		ArrayList children = new ArrayList();
+
+		ArrayList vars = new ArrayList();
+
+		String xml = null;
+		
+		String data = null;
+		
+		String tag;
+		
+		Tag(String tag) {
+			this.tag = tag;
+		}
+	}
+
+}