app/src/main/java/com/google/reviewit/UnifiedDiffFragment.java - apps/reviewit - Git at Google

 // Copyright (C) 2016 The Android Open Source Project
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 // http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.

 package com.google.reviewit;

 import android.os.AsyncTask;
 import android.os.Bundle;
 import android.support.annotation.IdRes;
 import android.support.annotation.LayoutRes;
 import android.util.Log;
 import android.view.Gravity;
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.LinearLayout;
 import android.widget.ProgressBar;

 import com.google.gerrit.extensions.common.DiffInfo;
 import com.google.gerrit.extensions.common.FileInfo;
 import com.google.gerrit.extensions.restapi.RestApiException;
 import com.google.reviewit.app.Change;
 import com.google.reviewit.util.FormatUtil;
 import com.google.reviewit.util.LayoutUtil;
 import com.google.reviewit.util.WidgetUtil;
 import com.google.reviewit.widget.PostReviewView;
 import com.google.reviewit.widget.ScrollWithHeadingsView;
 import com.google.reviewit.widget.UnifiedDiffView;

 import java.io.File;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;

 import static com.google.common.base.Preconditions.checkState;
 import static com.google.reviewit.util.LayoutUtil.matchLayout;
 import static com.google.reviewit.util.WidgetUtil.setGone;
 import static com.google.reviewit.util.WidgetUtil.setInvisible;
 import static com.google.reviewit.util.WidgetUtil.setVisible;

 /**
  * Fragment that shows a list of unified diffs for all files of one change.
  */
 public class UnifiedDiffFragment extends BaseFragment
     implements OnBackPressedAware, DispatchTouchEventAware {
   private static final String TAG = UnifiedDiffFragment.class.getName();
   private static final String PATH =
       "com.google.reviewit.UnifiedDiffFragment.PATH";

   private ScrollWithHeadingsView root;

   public static UnifiedDiffFragment create(String path) {
     UnifiedDiffFragment fragment = new UnifiedDiffFragment();
     Bundle bundle = new Bundle();
     bundle.putString(PATH, path);
     fragment.setArguments(bundle);
     return fragment;
   }

   @Override
   protected @LayoutRes int getLayout() {
     return R.layout.content_unified_diff;
   }

   @Override
   public void onActivityCreated(Bundle savedInstanceState) {
     super.onActivityCreated(savedInstanceState);

     ((MainActivity) getActivity()).getSupportActionBar().hide();

     String path = getArguments() != null
         ? getArguments().getString(PATH)
         : null;

     Change change = getApp().getCurrentChange();
     checkState(change != null, "Change not set");
     Map<String, FileInfo> files = change.currentRevision().files;
     root = (ScrollWithHeadingsView) v(R.id.unifiedDiffRoot);
     root.setWindow(getWindow());

     if (path != null) {
       setVisible(v(R.id.navigationButtons));
       initPostReviewNavPanel(change);
       FileInfo file = files.get(path);
       checkState(file != null, "File not found:" + path);
       init(root, path, change, files);
       displayFile(root, change, path, file);
     } else {
       setGone(v(R.id.navigationButtons));
       initPostReviewPanel(change);
       displayFiles(root, change, files);
     }
   }

   @Override
   public void dispatchTouchEvent(MotionEvent event) {
     root.getZoomHandler().dispatchTouchEvent(event);
   }

   private void initPostReviewPanel(Change change) {
     initPostReview(change, R.id.postReview);

     setVisible(v(R.id.postReviewPanel));

     v(R.id.expandPostReviewPanel).setOnClickListener(
         new View.OnClickListener() {
       @Override
       public void onClick(View v) {
         setGone(v(R.id.expandPostReviewPanel));
         setVisible(v(R.id.collapsePostReviewPanel, R.id.postReview));
       }
     });

     v(R.id.collapsePostReviewPanel).setOnClickListener(
         new View.OnClickListener() {
       @Override
       public void onClick(View v) {
         setGone(v(R.id.collapsePostReviewPanel, R.id.postReview));
         setVisible(v(R.id.expandPostReviewPanel));
       }
     });
   }

   private void initPostReviewNavPanel(Change change) {
     initPostReview(change, R.id.postReviewNav);

     v(R.id.expandPostReviewPanelNav).setOnClickListener(
         new View.OnClickListener() {
       @Override
       public void onClick(View v) {
         setGone(v(R.id.expandPostReviewPanelNav));
         setVisible(v(R.id.collapsePostReviewPanelNav, R.id.postReviewNav));
       }
     });

     v(R.id.collapsePostReviewPanelNav).setOnClickListener(
         new View.OnClickListener() {
       @Override
       public void onClick(View v) {
         setGone(v(R.id.collapsePostReviewPanelNav, R.id.postReviewNav));
         setVisible(v(R.id.expandPostReviewPanelNav));
       }
     });
   }

   private void initPostReview(Change change, @IdRes int id) {
     PostReviewView postReview = ((PostReviewView) v(id));
     postReview.setChange(change);
     postReview.select(change.getVote("Code-Review", getApp().getSelf()));
     postReview.setOnVoteListener(new PostReviewView.OnVoteListener() {
       @Override
       public void vote(int vote) {
         display(PostReviewFragment.create(vote));
       }
     });
   }

   private void init(ScrollWithHeadingsView root, String path, Change change,
                     Map<String, FileInfo> files) {
     String prevPath = null;
     String nextPath = null;
     List<String> paths = new ArrayList<>(files.keySet());
     int i = paths.indexOf(path);
     if (i > 0) {
       prevPath = paths.get(i - 1);
     }
     if (i < paths.size() - 1) {
       nextPath = paths.get(i + 1);
     }
     root.setNextBackgroundColor(i);

     if (prevPath != null || nextPath != null) {
       if (prevPath != null) {
         setVisible(v(R.id.navigationPrev));
         WidgetUtil.setText(v(R.id.navigationPrevFile),
             new File(prevPath).getName());
         setNavigationOnClickListener(R.id.navigationPrev, root, change,
             prevPath, files);
       } else {
         setInvisible(v(R.id.navigationPrev));
       }
       if (nextPath != null) {
         setVisible(v(R.id.navigationNext));
         WidgetUtil.setText(v(R.id.navigationNextFile),
             new File(nextPath).getName());
         setNavigationOnClickListener(R.id.navigationNext, root, change,
             nextPath, files);
       } else {
         setInvisible(v(R.id.navigationNext));
       }
     }
   }

   private void setNavigationOnClickListener(
       @IdRes int id, final ScrollWithHeadingsView root, final Change change,
       final String path, final Map<String, FileInfo> files) {
     v(id).setOnClickListener(new View.OnClickListener() {
       @Override
       public void onClick(View v) {
         root.clear();
         init(root, path, change, files);
         displayFile(root, change, path, files.get(path));
       }
     });
   }

   private void displayFile(
       ScrollWithHeadingsView root, Change change, String path, FileInfo file) {
     Map<String, FileInfo> files = new HashMap<>();
     files.put(path, file);
     displayFiles(root, change, files);
   }

   private void displayFiles(
       final ScrollWithHeadingsView root, final Change change,
       Map<String, FileInfo> files) {
     final Iterator<Map.Entry<String, FileInfo>> fileEntryIt =
         files.entrySet().iterator();
     root.setContent(new Iterator<ScrollWithHeadingsView.Content>() {
       @Override
       public boolean hasNext() {
         return fileEntryIt.hasNext();
       }

       @Override
       public ScrollWithHeadingsView.Content next() {
         Map.Entry<String, FileInfo> fileEntry = fileEntryIt.next();
         File f = new File(fileEntry.getKey());
         return new ScrollWithHeadingsView.Content(
             new ScrollWithHeadingsView.HeadingWithDetails(
                 getContext(), f.getName(), null,
                 FormatUtil.ensureSlash(f.getParent())),
                 createContent(change, fileEntry.getKey(),
                     fileEntry.getValue()));
       }

       public View createContent(
           final Change change, final String path, FileInfo file) {
         final LinearLayout layout = new LinearLayout(getContext());
         layout.setLayoutParams(new ViewGroup.LayoutParams(
             ViewGroup.LayoutParams.MATCH_PARENT, widgetUtil.dpToPx(400)));
         layout.setPadding(0, widgetUtil.dpToPx(30), 0, widgetUtil.dpToPx(30));
         layout.setGravity(Gravity.CENTER_HORIZONTAL);
         final ProgressBar p = new ProgressBar(getContext());
         p.setLayoutParams(matchLayout());
         p.setIndeterminate(true);
         p.getIndeterminateDrawable().setColorFilter(
             widgetUtil.color(R.color.progressReload),
             android.graphics.PorterDuff.Mode.SRC_IN);
         layout.addView(p);

         if (file.binary != null && file.binary) {
           // TODO
           return layout;
         }

         LayoutUtil.addOneTimeOnGlobalLayoutListener(
             p, new LayoutUtil.OneTimeOnGlobalLayoutListener() {
           @Override
           public void onFirstGlobalLayout() {
             new AsyncTask<String, Void, DiffInfo>() {
               @Override
               protected DiffInfo doInBackground(String... paths) {
                 String path = paths[0];
                 try {
                   return change.diff(path);
                 } catch (RestApiException e) {
                   Log.e(TAG, "Failed to get diff of file " + path
                       + " from change " + change.info._number, e);
                   return null;
                 }
               }

               protected void onPostExecute(final DiffInfo diff) {
                 layout.removeView(p);
                 layout.setLayoutParams(
                     new LinearLayout.LayoutParams(
                         LinearLayout.LayoutParams.MATCH_PARENT,
                         LinearLayout.LayoutParams.WRAP_CONTENT));
                 layout.setPadding(0,
                     layout.getPaddingTop() - widgetUtil.dpToPx(20),
                     0,
                     layout.getPaddingBottom() - widgetUtil.dpToPx(20));
                 UnifiedDiffView unifiedDiffView = new UnifiedDiffView
                     (getContext(), diff);
                 layout.addView(unifiedDiffView);
                 LayoutUtil.addOneTimeOnGlobalLayoutListener(
                     unifiedDiffView,
                     new LayoutUtil.OneTimeOnGlobalLayoutListener() {
                       @Override
                       public void onFirstGlobalLayout() {
                         root.relayout();
                       }
                     });
                 unifiedDiffView.setOnSizeChangedListener(
                     new UnifiedDiffView.OnSizeChangedListener() {
                   @Override
                   public void onSizeChanged() {
                     root.relayout();
                   }
                 });
               }
             }.executeOnExecutor(getApp().getExecutor(), path);
           }
         });

         return layout;
       }

       @Override
       public void remove() {
         throw new UnsupportedOperationException();
       }
     });
   }

   @Override
   public boolean onBackPressed() {
     // TODO abort background tasks
     return false;
   }
 }
	// Copyright (C) 2016 The Android Open Source Project
	//
	// Licensed under the Apache License, Version 2.0 (the "License");
	// you may not use this file except in compliance with the License.
	// You may obtain a copy of the License at
	//
	// http://www.apache.org/licenses/LICENSE-2.0
	//
	// Unless required by applicable law or agreed to in writing, software
	// distributed under the License is distributed on an "AS IS" BASIS,
	// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	// See the License for the specific language governing permissions and
	// limitations under the License.

	package com.google.reviewit;

	import android.os.AsyncTask;
	import android.os.Bundle;
	import android.support.annotation.IdRes;
	import android.support.annotation.LayoutRes;
	import android.util.Log;
	import android.view.Gravity;
	import android.view.MotionEvent;
	import android.view.View;
	import android.view.ViewGroup;
	import android.widget.LinearLayout;
	import android.widget.ProgressBar;

	import com.google.gerrit.extensions.common.DiffInfo;
	import com.google.gerrit.extensions.common.FileInfo;
	import com.google.gerrit.extensions.restapi.RestApiException;
	import com.google.reviewit.app.Change;
	import com.google.reviewit.util.FormatUtil;
	import com.google.reviewit.util.LayoutUtil;
	import com.google.reviewit.util.WidgetUtil;
	import com.google.reviewit.widget.PostReviewView;
	import com.google.reviewit.widget.ScrollWithHeadingsView;
	import com.google.reviewit.widget.UnifiedDiffView;

	import java.io.File;
	import java.util.ArrayList;
	import java.util.HashMap;
	import java.util.Iterator;
	import java.util.List;
	import java.util.Map;

	import static com.google.common.base.Preconditions.checkState;
	import static com.google.reviewit.util.LayoutUtil.matchLayout;
	import static com.google.reviewit.util.WidgetUtil.setGone;
	import static com.google.reviewit.util.WidgetUtil.setInvisible;
	import static com.google.reviewit.util.WidgetUtil.setVisible;

	/**
	* Fragment that shows a list of unified diffs for all files of one change.
	*/
	public class UnifiedDiffFragment extends BaseFragment
	implements OnBackPressedAware, DispatchTouchEventAware {
	private static final String TAG = UnifiedDiffFragment.class.getName();
	private static final String PATH =
	"com.google.reviewit.UnifiedDiffFragment.PATH";

	private ScrollWithHeadingsView root;

	public static UnifiedDiffFragment create(String path) {
	UnifiedDiffFragment fragment = new UnifiedDiffFragment();
	Bundle bundle = new Bundle();
	bundle.putString(PATH, path);
	fragment.setArguments(bundle);
	return fragment;
	}

	@Override
	protected @LayoutRes int getLayout() {
	return R.layout.content_unified_diff;
	}

	@Override
	public void onActivityCreated(Bundle savedInstanceState) {
	super.onActivityCreated(savedInstanceState);

	((MainActivity) getActivity()).getSupportActionBar().hide();

	String path = getArguments() != null
	? getArguments().getString(PATH)
	: null;

	Change change = getApp().getCurrentChange();
	checkState(change != null, "Change not set");
	Map<String, FileInfo> files = change.currentRevision().files;
	root = (ScrollWithHeadingsView) v(R.id.unifiedDiffRoot);
	root.setWindow(getWindow());

	if (path != null) {
	setVisible(v(R.id.navigationButtons));
	initPostReviewNavPanel(change);
	FileInfo file = files.get(path);
	checkState(file != null, "File not found:" + path);
	init(root, path, change, files);
	displayFile(root, change, path, file);
	} else {
	setGone(v(R.id.navigationButtons));
	initPostReviewPanel(change);
	displayFiles(root, change, files);
	}
	}

	@Override
	public void dispatchTouchEvent(MotionEvent event) {
	root.getZoomHandler().dispatchTouchEvent(event);
	}

	private void initPostReviewPanel(Change change) {
	initPostReview(change, R.id.postReview);

	setVisible(v(R.id.postReviewPanel));

	v(R.id.expandPostReviewPanel).setOnClickListener(
	new View.OnClickListener() {
	@Override
	public void onClick(View v) {
	setGone(v(R.id.expandPostReviewPanel));
	setVisible(v(R.id.collapsePostReviewPanel, R.id.postReview));
	}
	});

	v(R.id.collapsePostReviewPanel).setOnClickListener(
	new View.OnClickListener() {
	@Override
	public void onClick(View v) {
	setGone(v(R.id.collapsePostReviewPanel, R.id.postReview));
	setVisible(v(R.id.expandPostReviewPanel));
	}
	});
	}

	private void initPostReviewNavPanel(Change change) {
	initPostReview(change, R.id.postReviewNav);

	v(R.id.expandPostReviewPanelNav).setOnClickListener(
	new View.OnClickListener() {
	@Override
	public void onClick(View v) {
	setGone(v(R.id.expandPostReviewPanelNav));
	setVisible(v(R.id.collapsePostReviewPanelNav, R.id.postReviewNav));
	}
	});

	v(R.id.collapsePostReviewPanelNav).setOnClickListener(
	new View.OnClickListener() {
	@Override
	public void onClick(View v) {
	setGone(v(R.id.collapsePostReviewPanelNav, R.id.postReviewNav));
	setVisible(v(R.id.expandPostReviewPanelNav));
	}
	});
	}

	private void initPostReview(Change change, @IdRes int id) {
	PostReviewView postReview = ((PostReviewView) v(id));
	postReview.setChange(change);
	postReview.select(change.getVote("Code-Review", getApp().getSelf()));
	postReview.setOnVoteListener(new PostReviewView.OnVoteListener() {
	@Override
	public void vote(int vote) {
	display(PostReviewFragment.create(vote));
	}
	});
	}

	private void init(ScrollWithHeadingsView root, String path, Change change,
	Map<String, FileInfo> files) {
	String prevPath = null;
	String nextPath = null;
	List<String> paths = new ArrayList<>(files.keySet());
	int i = paths.indexOf(path);
	if (i > 0) {
	prevPath = paths.get(i - 1);
	}
	if (i < paths.size() - 1) {
	nextPath = paths.get(i + 1);
	}
	root.setNextBackgroundColor(i);

	if (prevPath != null \|\| nextPath != null) {
	if (prevPath != null) {
	setVisible(v(R.id.navigationPrev));
	WidgetUtil.setText(v(R.id.navigationPrevFile),
	new File(prevPath).getName());
	setNavigationOnClickListener(R.id.navigationPrev, root, change,
	prevPath, files);
	} else {
	setInvisible(v(R.id.navigationPrev));
	}
	if (nextPath != null) {
	setVisible(v(R.id.navigationNext));
	WidgetUtil.setText(v(R.id.navigationNextFile),
	new File(nextPath).getName());
	setNavigationOnClickListener(R.id.navigationNext, root, change,
	nextPath, files);
	} else {
	setInvisible(v(R.id.navigationNext));
	}
	}
	}

	private void setNavigationOnClickListener(
	@IdRes int id, final ScrollWithHeadingsView root, final Change change,
	final String path, final Map<String, FileInfo> files) {
	v(id).setOnClickListener(new View.OnClickListener() {
	@Override
	public void onClick(View v) {
	root.clear();
	init(root, path, change, files);
	displayFile(root, change, path, files.get(path));
	}
	});
	}

	private void displayFile(
	ScrollWithHeadingsView root, Change change, String path, FileInfo file) {
	Map<String, FileInfo> files = new HashMap<>();
	files.put(path, file);
	displayFiles(root, change, files);
	}

	private void displayFiles(
	final ScrollWithHeadingsView root, final Change change,
	Map<String, FileInfo> files) {
	final Iterator<Map.Entry<String, FileInfo>> fileEntryIt =
	files.entrySet().iterator();
	root.setContent(new Iterator<ScrollWithHeadingsView.Content>() {
	@Override
	public boolean hasNext() {
	return fileEntryIt.hasNext();
	}

	@Override
	public ScrollWithHeadingsView.Content next() {
	Map.Entry<String, FileInfo> fileEntry = fileEntryIt.next();
	File f = new File(fileEntry.getKey());
	return new ScrollWithHeadingsView.Content(
	new ScrollWithHeadingsView.HeadingWithDetails(
	getContext(), f.getName(), null,
	FormatUtil.ensureSlash(f.getParent())),
	createContent(change, fileEntry.getKey(),
	fileEntry.getValue()));
	}

	public View createContent(
	final Change change, final String path, FileInfo file) {
	final LinearLayout layout = new LinearLayout(getContext());
	layout.setLayoutParams(new ViewGroup.LayoutParams(
	ViewGroup.LayoutParams.MATCH_PARENT, widgetUtil.dpToPx(400)));
	layout.setPadding(0, widgetUtil.dpToPx(30), 0, widgetUtil.dpToPx(30));
	layout.setGravity(Gravity.CENTER_HORIZONTAL);
	final ProgressBar p = new ProgressBar(getContext());
	p.setLayoutParams(matchLayout());
	p.setIndeterminate(true);
	p.getIndeterminateDrawable().setColorFilter(
	widgetUtil.color(R.color.progressReload),
	android.graphics.PorterDuff.Mode.SRC_IN);
	layout.addView(p);

	if (file.binary != null && file.binary) {
	// TODO
	return layout;
	}

	LayoutUtil.addOneTimeOnGlobalLayoutListener(
	p, new LayoutUtil.OneTimeOnGlobalLayoutListener() {
	@Override
	public void onFirstGlobalLayout() {
	new AsyncTask<String, Void, DiffInfo>() {
	@Override
	protected DiffInfo doInBackground(String... paths) {
	String path = paths[0];
	try {
	return change.diff(path);
	} catch (RestApiException e) {
	Log.e(TAG, "Failed to get diff of file " + path
	+ " from change " + change.info._number, e);
	return null;
	}
	}

	protected void onPostExecute(final DiffInfo diff) {
	layout.removeView(p);
	layout.setLayoutParams(
	new LinearLayout.LayoutParams(
	LinearLayout.LayoutParams.MATCH_PARENT,
	LinearLayout.LayoutParams.WRAP_CONTENT));
	layout.setPadding(0,
	layout.getPaddingTop() - widgetUtil.dpToPx(20),
	0,
	layout.getPaddingBottom() - widgetUtil.dpToPx(20));
	UnifiedDiffView unifiedDiffView = new UnifiedDiffView
	(getContext(), diff);
	layout.addView(unifiedDiffView);
	LayoutUtil.addOneTimeOnGlobalLayoutListener(
	unifiedDiffView,
	new LayoutUtil.OneTimeOnGlobalLayoutListener() {
	@Override
	public void onFirstGlobalLayout() {
	root.relayout();
	}
	});
	unifiedDiffView.setOnSizeChangedListener(
	new UnifiedDiffView.OnSizeChangedListener() {
	@Override
	public void onSizeChanged() {
	root.relayout();
	}
	});
	}
	}.executeOnExecutor(getApp().getExecutor(), path);
	}
	});

	return layout;
	}

	@Override
	public void remove() {
	throw new UnsupportedOperationException();
	}
	});
	}

	@Override
	public boolean onBackPressed() {
	// TODO abort background tasks
	return false;
	}
	}