Library Class
The access point for the JAR library is a class that extends the
Library class. The library's main job is to list the tools that are
available through the library; most often, the tools are all tools
to add the various components defined - that is, instances of the
AddTool class working with different component factories.
Components
package com.cburch.gray;
import java.util.Arrays;
import java.util.List;
import com.cburch.logisim.tools.AddTool;
import com.cburch.logisim.tools.Library;
/** The library of components that the user can access. */
public class Components extends Library {
/** The list of all tools contained in this library. Technically,
* libraries contain tools, which is a slightly more general concept
* than components; practically speaking, though, you'll most often want
* to create AddTools for new components that can be added into the circuit.
*/
private List<AddTool> tools;
/** Constructs an instance of this library. This constructor is how
* Logisim accesses first when it opens the JAR file: It looks for
* a no-arguments constructor method of the user-designated class.
*/
public Components() {
tools = Arrays.asList(new AddTool[] {
new AddTool(new GrayIncrementer()),
new AddTool(new SimpleGrayCounter()),
new AddTool(new GrayCounter()),
});
}
/** Returns the name of the library that the user will see. */
public String getDisplayName() {
return "Gray Tools";
}
/** Returns a list of all the tools available in this library. */
public List<AddTool> getTools() {
return tools;
}
}
Next: Simple Gray Code Counter.
