ContextProviderWrapper.java

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package org.netbeans.modules.ruby.debugger;

import java.util.List;
import org.netbeans.api.debugger.DebuggerManager;
import org.netbeans.modules.ruby.debugger.breakpoints.BreakpointModel;
import org.netbeans.modules.ruby.debugger.model.CallStackModel;
import org.netbeans.modules.ruby.debugger.model.SessionsTableModelFilter;
import org.netbeans.modules.ruby.debugger.model.ThreadsModel;
import org.netbeans.modules.ruby.debugger.model.VariablesModel;
import org.netbeans.modules.ruby.debugger.model.WatchesModel;
import org.netbeans.spi.debugger.ContextProvider;
import org.netbeans.spi.viewmodel.NodeModel;
import org.netbeans.spi.viewmodel.TableModel;
import org.netbeans.spi.viewmodel.TableModelFilter;
import org.netbeans.spi.viewmodel.TreeModel;

public class ContextProviderWrapper {
    
    private ContextProvider contextProvider;
    
    // per IDE session
    private static BreakpointModel breakpointModel;
    private static SessionsTableModelFilter sessionsModel;

    // per Ruby session
    private RubySession rubySession;
    private CallStackModel callStackModel;
    private VariablesModel variablesModel;
    private WatchesModel watchesModel;
    private ThreadsModel threadsModel;
    
    public ContextProviderWrapper(final ContextProvider contextProvider) {
        this.contextProvider = contextProvider;
    }
    
    private static <T> List<? extends T> debugLookup(String folder, Class<T> clazz) {
        return DebuggerManager.getDebuggerManager().lookup(folder, clazz);
    }
    
    static <T> T lookupFirst(final ContextProvider cp, Class<T> clazz) {
        return cp.lookupFirst(null, clazz);
    }
    
    public void fireModelChanges() {
        // refresh views
        getThreadsModel().fireChanges();
        getCallStackModel().fireChanges();
        getVariablesModel().fireChanges();
        getWatchesModel().fireChanges();
        ContextProviderWrapper.getBreakpointModel().fireChanges();
        ContextProviderWrapper.getSessionsModel().fireChanges();
    }

    public static SessionsTableModelFilter getSessionsModel() {
        if (sessionsModel == null) {
            List<? extends TableModelFilter> tableModels = ContextProviderWrapper.debugLookup("SessionsView", TableModelFilter.class);
            for (TableModelFilter model : tableModels) {
                if (model instanceof SessionsTableModelFilter) {
                    sessionsModel = (SessionsTableModelFilter) model;
                    break;
                }
            }
        }
        return sessionsModel;
    }
    
    public static BreakpointModel getBreakpointModel() {
        if (breakpointModel == null) {
            List<? extends NodeModel> tableModels = ContextProviderWrapper.debugLookup("BreakpointsView", NodeModel.class);
            for (NodeModel model : tableModels) {
                if (model instanceof BreakpointModel) {
                    breakpointModel = (BreakpointModel) model;
                    break;
                }
            }
        }
        return breakpointModel;
    }
    

    public RubySession getRubySession() {
        if (rubySession == null) {
            rubySession = ContextProviderWrapper.lookupFirst(contextProvider, RubySession.class);
        }
        return rubySession;
    }
    
    public ThreadsModel getThreadsModel() {
        if (threadsModel == null) {
            threadsModel = (ThreadsModel) contextProvider.lookupFirst("ThreadsView", TreeModel.class);
        }
        return threadsModel;
    }
    
    public CallStackModel getCallStackModel() {
        if (callStackModel == null) {
            callStackModel = (CallStackModel) contextProvider.lookupFirst("CallStackView", TreeModel.class);
        }
        return callStackModel;
    }
    
    public VariablesModel getVariablesModel() {
        if (variablesModel == null) {
            variablesModel = (VariablesModel) contextProvider.lookupFirst("LocalsView", TreeModel.class);
        }
        return variablesModel;
    }
    
    public WatchesModel getWatchesModel() {
        if (watchesModel == null) {
            watchesModel = (WatchesModel) contextProvider.lookupFirst("WatchesView", TreeModel.class);
        }
        return watchesModel;
    }
    
}