appjar/src/main/java/com/google/gerrit/client/patches/SideBySideTable.java - gerrit - Git at Google

 // Copyright 2008 Google Inc.
 //
 // 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.gerrit.client.patches;

 import com.google.gerrit.client.data.SideBySideLine;
 import com.google.gerrit.client.data.SideBySidePatchDetail;
 import com.google.gerrit.client.reviewdb.PatchLineComment;
 import com.google.gerrit.client.ui.DomUtil;
 import com.google.gwt.user.client.ui.FlowPanel;
 import com.google.gwt.user.client.ui.InlineLabel;

 import java.util.Iterator;
 import java.util.List;

 public class SideBySideTable extends AbstractPatchContentTable {
   private int fileCnt;
   private int maxLineNumber;

   @Override
   protected void onCellDoubleClick(final int row, final int column) {
     if (column > 1 && getRowItem(row) instanceof SideBySideLineList) {
       final SideBySideLineList pl = (SideBySideLineList) getRowItem(row);
       final short file = (short) ((column - 1) / 2);
       final SideBySideLine line = pl.lines.get(file);
       switch (line.getType()) {
         case DELETE:
         case EQUAL:
         case INSERT: {
           createCommentEditor(row + 1, column, line.getLineNumber(), file);
           break;
         }
       }
     }
   }

   public void display(final SideBySidePatchDetail detail) {
     setAccountInfoCache(detail.getAccounts());
     setPatchKey(detail.getPatch().getKey());
     fileCnt = detail.getFileCount();
     maxLineNumber = detail.getLineCount();

     List<SideBySideLine> prior = null;

     // Generate the table in HTML, because its quicker than by DOM.
     // This pass does not include the line comments; they need full
     // GWT widgets and are relatively infrequent. We do them later.
     //
     final StringBuilder nc = new StringBuilder();
     appendHeader(nc);
     for (final List<SideBySideLine> pLine : detail.getLines()) {
       if (skipped(prior, pLine) > 0) {
         appendSkipLine(nc);
       }
       prior = pLine;
       appendFileLine(nc, pLine);
     }
     if (skipped(prior, null) > 0) {
       appendSkipLine(nc);
     }
     resetHtml(nc.toString());

     // Insert the comment widgets now that the table DOM has been
     // parsed out of the HTML by the browser. We also bind each
     // of the row item objects.
     //
     int row = 1;
     prior = null;
     for (final List<SideBySideLine> pLine : detail.getLines()) {
       final int skipCnt = skipped(prior, pLine);
       if (skipCnt > 0) {
         bindSkipLine(row, skipCnt);
         row++;
       }
       prior = pLine;

       setRowItem(row, new SideBySideLineList(pLine));

       int nextComment = row;
       int lastComment = row;
       for (int fileId = 0; fileId < fileCnt; fileId++) {
         final SideBySideLine s = pLine.get(fileId);
         if (s == null) {
           continue;
         }

         final List<PatchLineComment> comments = s.getComments();
         if (comments == null) {
           continue;
         }

         for (Iterator<PatchLineComment> ci = comments.iterator(); ci.hasNext();) {
           final PatchLineComment c = ci.next();
           if (nextComment == lastComment) {
             lastComment++;
             table.insertRow(lastComment);
             table.getCellFormatter().setStyleName(lastComment, 0, S_ICON_CELL);
           }
           nextComment++;
           table.setWidget(nextComment, 1 + 2 * fileId, null);
           bindComment(nextComment, 1 + 2 * fileId + 1, c, !ci.hasNext());
         }
       }

       row = lastComment + 1;
     }
     final int skipCnt = skipped(prior, null);
     if (skipCnt > 0) {
       bindSkipLine(row, skipCnt);
       row++;
     }
   }

   private void appendHeader(final StringBuilder nc) {
     final String width = (100 / fileCnt) + "%";
     nc.append("<tr>");
     nc.append("<td class=\"FileColumnHeader " + S_ICON_CELL + "\">&nbsp;</td>");

     if (fileCnt == 2) {
       nc.append("<td class=\"FileColumnHeader LineNumber\">&nbsp;</td>");
       nc.append("<td class=\"FileColumnHeader\" width=\"");
       nc.append(width);
       nc.append("\">");
       nc.append(DomUtil.escape(PatchUtil.C.patchHeaderOld()));
       nc.append("</td>");
     } else {
       for (int fileId = 0; fileId < fileCnt - 1; fileId++) {
         nc.append("<td class=\"FileColumnHeader LineNumber\">&nbsp;</td>");
         nc.append("<td class=\"FileColumnHeader\" width=\"");
         nc.append(width);
         nc.append("\">");
         nc.append(DomUtil.escape(PatchUtil.M.patchHeaderAncestor(fileId + 1)));
         nc.append("</td>");
       }
     }

     nc.append("<td class=\"FileColumnHeader LineNumber\">&nbsp;</td>");
     nc.append("<td class=\"FileColumnHeader\" width=\"");
     nc.append(width);
     nc.append("\">");
     nc.append(DomUtil.escape(PatchUtil.C.patchHeaderNew()));
     nc.append("</td>");

     nc.append("</tr>");
   }

   private int skipped(List<SideBySideLine> prior,
       final List<SideBySideLine> pLine) {
     int existCnt = 0;
     int gapCnt = 0;
     int lines = 0;

     if (prior != null && pLine != null) {
       for (int i = 0; i < fileCnt; i++) {
         final SideBySideLine ps = prior.get(i);
         final SideBySideLine cs = pLine.get(i);
         if (ps != null && cs != null) {
           existCnt++;
           if (ps.getLineNumber() + 1 != cs.getLineNumber()) {
             lines =
                 Math.max(lines, cs.getLineNumber() - ps.getLineNumber() - 1);
             gapCnt++;
           }
         }
       }
     } else if (prior != null) {
       for (int i = 0; i < fileCnt; i++) {
         final SideBySideLine ps = prior.get(i);
         if (ps != null) {
           existCnt++;
           if (ps.getLineNumber() < maxLineNumber) {
             lines = Math.max(lines, maxLineNumber - ps.getLineNumber() - 1);
             gapCnt++;
           }
         }
       }
     } else {
       for (int i = 0; i < fileCnt; i++) {
         final SideBySideLine cs = pLine.get(i);
         if (cs != null) {
           existCnt++;
           if (1 != cs.getLineNumber()) {
             lines = Math.max(lines, cs.getLineNumber() - 1);
             gapCnt++;
           }
         }
       }
     }
     return existCnt == gapCnt ? lines : 0;
   }

   private void appendSkipLine(final StringBuilder body) {
     body.append("<tr>");
     body.append("<td class=\"" + S_ICON_CELL + "\">&nbsp;</td>");
     body.append("<td class=\"SkipLine\" colspan=\"");
     body.append(fileCnt * 2);
     body.append("\">");
     body.append("</td>");
     body.append("</tr>");
   }

   private void bindSkipLine(int row, final int skipCnt) {
     final FlowPanel skipPanel = new FlowPanel();
     skipPanel.add(new InlineLabel(PatchUtil.M.patchSkipRegion(skipCnt)));
     table.setWidget(row, 1, skipPanel);
   }

   private void appendFileLine(final StringBuilder nc,
       final List<SideBySideLine> line) {
     nc.append("<tr>");
     nc.append("<td class=\"" + S_ICON_CELL + "\">&nbsp;</td>");

     for (int fileId = 0; fileId < fileCnt; fileId++) {
       final SideBySideLine s = line.get(fileId);
       if (s != null) {
         nc.append("<td class=\"LineNumber\">");
         nc.append(s.getLineNumber());
         nc.append("</td>");

         nc.append("<td class=\"FileLine FileLine-");
         nc.append(s.getType().name());
         nc.append("\">");
         if (!"".equals(s.getText()))
           nc.append(PatchUtil.lineToHTML(s.getText()));
         else
           nc.append("&nbsp;");
         nc.append("</td>");
       } else {
         nc.append("<td class=\"LineNumber\">&nbsp;</td>");
         nc.append("<td class=\"FileLine FileLineNone\">&nbsp;</td>");
       }
     }

     nc.append("</tr>");
   }

   private static class SideBySideLineList {
     final List<SideBySideLine> lines;

     SideBySideLineList(final List<SideBySideLine> a) {
       lines = a;
     }
   }
 }
	// Copyright 2008 Google Inc.
	//
	// 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.gerrit.client.patches;

	import com.google.gerrit.client.data.SideBySideLine;
	import com.google.gerrit.client.data.SideBySidePatchDetail;
	import com.google.gerrit.client.reviewdb.PatchLineComment;
	import com.google.gerrit.client.ui.DomUtil;
	import com.google.gwt.user.client.ui.FlowPanel;
	import com.google.gwt.user.client.ui.InlineLabel;

	import java.util.Iterator;
	import java.util.List;

	public class SideBySideTable extends AbstractPatchContentTable {
	private int fileCnt;
	private int maxLineNumber;

	@Override
	protected void onCellDoubleClick(final int row, final int column) {
	if (column > 1 && getRowItem(row) instanceof SideBySideLineList) {
	final SideBySideLineList pl = (SideBySideLineList) getRowItem(row);
	final short file = (short) ((column - 1) / 2);
	final SideBySideLine line = pl.lines.get(file);
	switch (line.getType()) {
	case DELETE:
	case EQUAL:
	case INSERT: {
	createCommentEditor(row + 1, column, line.getLineNumber(), file);
	break;
	}
	}
	}
	}

	public void display(final SideBySidePatchDetail detail) {
	setAccountInfoCache(detail.getAccounts());
	setPatchKey(detail.getPatch().getKey());
	fileCnt = detail.getFileCount();
	maxLineNumber = detail.getLineCount();

	List<SideBySideLine> prior = null;

	// Generate the table in HTML, because its quicker than by DOM.
	// This pass does not include the line comments; they need full
	// GWT widgets and are relatively infrequent. We do them later.
	//
	final StringBuilder nc = new StringBuilder();
	appendHeader(nc);
	for (final List<SideBySideLine> pLine : detail.getLines()) {
	if (skipped(prior, pLine) > 0) {
	appendSkipLine(nc);
	}
	prior = pLine;
	appendFileLine(nc, pLine);
	}
	if (skipped(prior, null) > 0) {
	appendSkipLine(nc);
	}
	resetHtml(nc.toString());

	// Insert the comment widgets now that the table DOM has been
	// parsed out of the HTML by the browser. We also bind each
	// of the row item objects.
	//
	int row = 1;
	prior = null;
	for (final List<SideBySideLine> pLine : detail.getLines()) {
	final int skipCnt = skipped(prior, pLine);
	if (skipCnt > 0) {
	bindSkipLine(row, skipCnt);
	row++;
	}
	prior = pLine;

	setRowItem(row, new SideBySideLineList(pLine));

	int nextComment = row;
	int lastComment = row;
	for (int fileId = 0; fileId < fileCnt; fileId++) {
	final SideBySideLine s = pLine.get(fileId);
	if (s == null) {
	continue;
	}

	final List<PatchLineComment> comments = s.getComments();
	if (comments == null) {
	continue;
	}

	for (Iterator<PatchLineComment> ci = comments.iterator(); ci.hasNext();) {
	final PatchLineComment c = ci.next();
	if (nextComment == lastComment) {
	lastComment++;
	table.insertRow(lastComment);
	table.getCellFormatter().setStyleName(lastComment, 0, S_ICON_CELL);
	}
	nextComment++;
	table.setWidget(nextComment, 1 + 2 * fileId, null);
	bindComment(nextComment, 1 + 2 * fileId + 1, c, !ci.hasNext());
	}
	}

	row = lastComment + 1;
	}
	final int skipCnt = skipped(prior, null);
	if (skipCnt > 0) {
	bindSkipLine(row, skipCnt);
	row++;
	}
	}

	private void appendHeader(final StringBuilder nc) {
	final String width = (100 / fileCnt) + "%";
	nc.append("<tr>");
	nc.append("<td class=\"FileColumnHeader " + S_ICON_CELL + "\"> </td>");

	if (fileCnt == 2) {
	nc.append("<td class=\"FileColumnHeader LineNumber\"> </td>");
	nc.append("<td class=\"FileColumnHeader\" width=\"");
	nc.append(width);
	nc.append("\">");
	nc.append(DomUtil.escape(PatchUtil.C.patchHeaderOld()));
	nc.append("</td>");
	} else {
	for (int fileId = 0; fileId < fileCnt - 1; fileId++) {
	nc.append("<td class=\"FileColumnHeader LineNumber\"> </td>");
	nc.append("<td class=\"FileColumnHeader\" width=\"");
	nc.append(width);
	nc.append("\">");
	nc.append(DomUtil.escape(PatchUtil.M.patchHeaderAncestor(fileId + 1)));
	nc.append("</td>");
	}
	}

	nc.append("<td class=\"FileColumnHeader LineNumber\"> </td>");
	nc.append("<td class=\"FileColumnHeader\" width=\"");
	nc.append(width);
	nc.append("\">");
	nc.append(DomUtil.escape(PatchUtil.C.patchHeaderNew()));
	nc.append("</td>");

	nc.append("</tr>");
	}

	private int skipped(List<SideBySideLine> prior,
	final List<SideBySideLine> pLine) {
	int existCnt = 0;
	int gapCnt = 0;
	int lines = 0;

	if (prior != null && pLine != null) {
	for (int i = 0; i < fileCnt; i++) {
	final SideBySideLine ps = prior.get(i);
	final SideBySideLine cs = pLine.get(i);
	if (ps != null && cs != null) {
	existCnt++;
	if (ps.getLineNumber() + 1 != cs.getLineNumber()) {
	lines =
	Math.max(lines, cs.getLineNumber() - ps.getLineNumber() - 1);
	gapCnt++;
	}
	}
	}
	} else if (prior != null) {
	for (int i = 0; i < fileCnt; i++) {
	final SideBySideLine ps = prior.get(i);
	if (ps != null) {
	existCnt++;
	if (ps.getLineNumber() < maxLineNumber) {
	lines = Math.max(lines, maxLineNumber - ps.getLineNumber() - 1);
	gapCnt++;
	}
	}
	}
	} else {
	for (int i = 0; i < fileCnt; i++) {
	final SideBySideLine cs = pLine.get(i);
	if (cs != null) {
	existCnt++;
	if (1 != cs.getLineNumber()) {
	lines = Math.max(lines, cs.getLineNumber() - 1);
	gapCnt++;
	}
	}
	}
	}
	return existCnt == gapCnt ? lines : 0;
	}

	private void appendSkipLine(final StringBuilder body) {
	body.append("<tr>");
	body.append("<td class=\"" + S_ICON_CELL + "\"> </td>");
	body.append("<td class=\"SkipLine\" colspan=\"");
	body.append(fileCnt * 2);
	body.append("\">");
	body.append("</td>");
	body.append("</tr>");
	}

	private void bindSkipLine(int row, final int skipCnt) {
	final FlowPanel skipPanel = new FlowPanel();
	skipPanel.add(new InlineLabel(PatchUtil.M.patchSkipRegion(skipCnt)));
	table.setWidget(row, 1, skipPanel);
	}

	private void appendFileLine(final StringBuilder nc,
	final List<SideBySideLine> line) {
	nc.append("<tr>");
	nc.append("<td class=\"" + S_ICON_CELL + "\"> </td>");

	for (int fileId = 0; fileId < fileCnt; fileId++) {
	final SideBySideLine s = line.get(fileId);
	if (s != null) {
	nc.append("<td class=\"LineNumber\">");
	nc.append(s.getLineNumber());
	nc.append("</td>");

	nc.append("<td class=\"FileLine FileLine-");
	nc.append(s.getType().name());
	nc.append("\">");
	if (!"".equals(s.getText()))
	nc.append(PatchUtil.lineToHTML(s.getText()));
	else
	nc.append(" ");
	nc.append("</td>");
	} else {
	nc.append("<td class=\"LineNumber\"> </td>");
	nc.append("<td class=\"FileLine FileLineNone\"> </td>");
	}
	}

	nc.append("</tr>");
	}

	private static class SideBySideLineList {
	final List<SideBySideLine> lines;

	SideBySideLineList(final List<SideBySideLine> a) {
	lines = a;
	}
	}
	}