ChangeRequestsPage.java :  » UnTagged » mosync » com » mobilesorcery » sdk » capabilities » ui » Android Open Source

package com.mobilesorcery.sdk.capabilities.ui;

import java.text.MessageFormat;
import java.util.Map;

import org.eclipse.core.resources.IProject;
import org.eclipse.jface.viewers.CheckStateChangedEvent;
import org.eclipse.jface.viewers.CheckboxTreeViewer;
import org.eclipse.jface.viewers.ICheckStateListener;
import org.eclipse.jface.viewers.ICheckStateProvider;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.wizard.WizardPage;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;

import com.mobilesorcery.sdk.capabilities.core.AbstractChangeRequest;
import com.mobilesorcery.sdk.capabilities.core.CompoundChangeRequest;
import com.mobilesorcery.sdk.capabilities.core.IChangeRequest;
import com.mobilesorcery.sdk.capabilities.ui.ChangeRequestsPage.ChangeRequestContentProvider;
import com.mobilesorcery.sdk.core.MoSyncProject;

public class ChangeRequestsPage extends WizardPage {

  public class ChangeRequestCheckStateProvider implements ICheckStateProvider {

    private Map<IProject, IChangeRequest> changeRequests;

    public ChangeRequestCheckStateProvider(Map<IProject, IChangeRequest> changeRequests) {
      this.changeRequests = changeRequests;
    }
    
    public boolean isChecked(Object element) {
      if (element instanceof IProject) {
        IChangeRequest changeRequest = changeRequests.get(element);
        return isChecked(changeRequest);
      } else if (element instanceof CompoundChangeRequest) {
        CompoundChangeRequest compoundChangeRequest = (CompoundChangeRequest) element;
        for (IChangeRequest changeRequest : compoundChangeRequest.getChangeRequests()) {
          if (!isChecked(changeRequest)) {
            return false;
          }
          return true;
        }
      } else if (element instanceof IChangeRequest) {
        IChangeRequest changeRequest = (IChangeRequest) element;
        MoSyncProject project = changeRequest.getProject();
        CompoundChangeRequest changeRequestParent = (CompoundChangeRequest) changeRequests.get(project.getWrappedProject());
        return changeRequestParent != null && changeRequestParent.shouldApply(changeRequest);
      }
      
      return false;
    }

    public boolean isGrayed(Object element) {
      if (element instanceof IProject) {
        IChangeRequest changeRequest = changeRequests.get(element);
        return isGrayed(changeRequest);
      } else if (element instanceof CompoundChangeRequest) {
        CompoundChangeRequest compoundChangeRequest = (CompoundChangeRequest) element;
        IChangeRequest[] changeRequests = compoundChangeRequest.getChangeRequests();
        int checkedCount = 0;
        for (IChangeRequest changeRequest : changeRequests) {
          if (isChecked(changeRequest)) {
            checkedCount++;
          }
        }
        return checkedCount > 0 && changeRequests.length > checkedCount;
      }
      return false;
    }

  }

  public class ChangeRequestLabelProvider extends LabelProvider {
    public String getText(Object element) {
      if (element instanceof IProject) {
        return MessageFormat.format("Project: {0}", ((IProject) element).getName());
      }
      
      return super.getText(element);
    }
  }
  
  public class ChangeRequestContentProvider implements ITreeContentProvider {

    private Map<IProject, IChangeRequest> input;

    public void dispose() {
    }

    public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
      this.input = (Map<IProject, IChangeRequest>) newInput;
    }

    public Object[] getElements(Object inputElement) {
      return input.keySet().toArray();
    }

    public Object[] getChildren(Object parentElement) {
      if (parentElement instanceof IProject) {
        return getChangeRequests(input.get(parentElement));
      } else if (parentElement instanceof CompoundChangeRequest) {
        return getChangeRequests((IChangeRequest) parentElement);
      }
      return new Object[0];
    }

    private Object[] getChangeRequests(IChangeRequest changeRequest) {
      if (changeRequest instanceof CompoundChangeRequest) {
        return ((CompoundChangeRequest) changeRequest).getChangeRequests();
      } else {
        return new Object[] { changeRequest };
      }
    }

    public Object getParent(Object element) {
      return (element instanceof AbstractChangeRequest) ? 
          ((AbstractChangeRequest) element).getParent():
          null;
    }

    public boolean hasChildren(Object element) {
      return getChildren(element).length > 0;
    }
    
  }

  private Map<IProject, IChangeRequest> changeRequests;

  protected ChangeRequestsPage(Map<IProject, IChangeRequest> changeRequests) {
    super("change.requests", "Change Project Properties", null);
    this.changeRequests = changeRequests;
  }

  public void createControl(Composite parent) {
    Composite main = new Composite(parent, SWT.NONE);
    main.setLayout(new GridLayout(1, false));
    Label desc = new Label(main, SWT.NONE);
    desc.setText("Select the changes to apply to the project(s)");
    final CheckboxTreeViewer changeRequestsTree = new CheckboxTreeViewer(main);
    changeRequestsTree.setLabelProvider(new ChangeRequestLabelProvider());
    final ChangeRequestContentProvider contentProvider = new ChangeRequestContentProvider();
    changeRequestsTree.setContentProvider(contentProvider);
    changeRequestsTree.setCheckStateProvider(new ChangeRequestCheckStateProvider(changeRequests));
    changeRequestsTree.setInput(changeRequests);
    changeRequestsTree.addCheckStateListener(new ICheckStateListener() {
      public void checkStateChanged(CheckStateChangedEvent event) {
        Object parent = contentProvider.getParent(event.getElement());
        if (parent instanceof CompoundChangeRequest) {
          CompoundChangeRequest changeRequest = (CompoundChangeRequest) parent;
          changeRequest.setShouldApply((IChangeRequest) event.getElement(), event.getChecked());
          changeRequestsTree.refresh(true);
        }
      }
    });
    changeRequestsTree.getTree().setLayoutData(new GridData(GridData.FILL_BOTH));
    
    setControl(main);
  }

}