openide/source/com/intellij/compiler/CompilerMessageImpl.java

package com.intellij.compiler;

import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.compiler.CompilerMessage;
import com.intellij.openapi.compiler.CompilerMessageCategory;
import com.intellij.openapi.editor.Document;
import com.intellij.openapi.editor.ex.util.EditorUtil;
import com.intellij.openapi.fileEditor.FileDocumentManager;
import com.intellij.openapi.fileEditor.OpenFileDescriptor;
import com.intellij.openapi.fileTypes.FileTypeManager;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.openapi.vfs.VirtualFileManager;
import com.intellij.pom.Navigatable;
import com.intellij.psi.codeStyle.CodeStyleSettingsManager;

public final class CompilerMessageImpl implements CompilerMessage {

  private Project myProject;
  private final CompilerMessageCategory myCategory;
  private final String myMessage;
  private VirtualFile myFile;
  private final int myRow;
  private final int myColumn;

  public CompilerMessageImpl(Project project, CompilerMessageCategory category, String message, final String url, int row, int column) {
    myProject = project;
    myCategory = category;
    myMessage = (message != null)? message : "";
    myRow = row;
    myColumn = column;
    ApplicationManager.getApplication().runReadAction(new Runnable() {
      public void run() {
        myFile = (url != null)? VirtualFileManager.getInstance().findFileByUrl(url) : null;
      }
    });
  }

  public CompilerMessageCategory getCategory() {
    return myCategory;
  }

  public String getMessage() {
    return myMessage;
  }

  public Navigatable getNavigatable() {
    final VirtualFile virtualFile = getVirtualFile();
    if (virtualFile != null) {
      final int line = getLine() - 1; // editor lines are zero-based
      final Document document = FileDocumentManager.getInstance().getDocument(virtualFile);
      if (document != null && line >= 0 && line < document.getLineCount()) {
        final int offset;
        if (getColumn() > 0) {
          final int lineStart = document.getLineStartOffset(line);
          final int lineEnd = document.getLineEndOffset(line);
          final CharSequence chText = document.getCharsSequence().subSequence(lineStart, lineEnd);
          final int tabSize = CodeStyleSettingsManager.getSettings(myProject).getTabSize(FileTypeManager.getInstance().getFileTypeByFile(virtualFile));
          offset = lineStart + EditorUtil.calcOffset(null, chText, 0, chText.length(), getColumn(), tabSize) - 1;
        }
        else {
          offset = document.getLineStartOffset(line);
        }
        if (offset >= 0 && offset < document.getTextLength()) {
          return new OpenFileDescriptor(myProject, virtualFile, offset);
        }
      }
    }
    return null;
  }

  public VirtualFile getVirtualFile() {
    return myFile;
  }

  public String getExportTextPrefix() {
    if (getLine() >= 0) return "line (" + getLine() + ")";

    return "";
  }

  public String getRenderTextPrefix() {
    if (getLine() >= 0) return "(" + getLine() + ", " + getColumn() + ")";

    return "";
  }

  public int getLine() {
    return myRow;
  }

  public int getColumn() {
    return myColumn;
  }

  public boolean equals(Object o) {
    if (this == o) return true;
    if (!(o instanceof CompilerMessage)) return false;

    final CompilerMessageImpl compilerMessage = (CompilerMessageImpl)o;

    if (myColumn != compilerMessage.myColumn) return false;
    if (myRow != compilerMessage.myRow) return false;
    if (!myCategory.equals(compilerMessage.myCategory)) return false;
    if (myFile != null ? !myFile.equals(compilerMessage.myFile) : compilerMessage.myFile != null) return false;
    if (!myMessage.equals(compilerMessage.myMessage)) return false;

    return true;
  }

  public int hashCode() {
    int result;
    result = myCategory.hashCode();
    result = 29 * result + myMessage.hashCode();
    result = 29 * result + (myFile != null ? myFile.hashCode() : 0);
    result = 29 * result + myRow;
    result = 29 * result + myColumn;
    return result;
  }

}