com.android.tools.idea.editors.allocations.AllocationsEditor.java Source code

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Here is the source code for com.android.tools.idea.editors.allocations.AllocationsEditor.java

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/*
 * Copyright (C) 2014 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.android.tools.idea.editors.allocations;

import com.android.ddmlib.AllocationInfo;
import com.android.ddmlib.AllocationsParser;
import com.android.ddmlib.ByteBufferUtil;
import com.google.common.base.Throwables;
import com.intellij.codeHighlighting.BackgroundEditorHighlighter;
import com.intellij.ide.structureView.StructureViewBuilder;
import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.fileEditor.FileEditor;
import com.intellij.openapi.fileEditor.FileEditorLocation;
import com.intellij.openapi.fileEditor.FileEditorState;
import com.intellij.openapi.fileEditor.FileEditorStateLevel;
import com.intellij.openapi.progress.ProcessCanceledException;
import com.intellij.openapi.progress.ProgressIndicator;
import com.intellij.openapi.progress.Task;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.ui.Messages;
import com.intellij.openapi.util.Key;
import com.intellij.openapi.vfs.VfsUtilCore;
import com.intellij.openapi.vfs.VirtualFile;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

import javax.swing.*;
import java.awt.*;
import java.beans.PropertyChangeListener;
import java.io.File;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;

public class AllocationsEditor implements FileEditor {
    private final JPanel myPanel;

    public AllocationsEditor(@NotNull final Project project, @NotNull final VirtualFile file) {
        myPanel = new JPanel(new BorderLayout());
        parseAllocationsFileInBackground(project, file);
    }

    private void parseAllocationsFileInBackground(final Project project, final VirtualFile file) {
        final Task.Modal parseTask = new Task.Modal(project, "Parsing allocations file", false) {
            private AllocationInfo[] myAllocations;
            private String myErrorMessage;

            @Override
            public void run(@NotNull ProgressIndicator indicator) {
                indicator.setIndeterminate(true);

                final File allocationsFile = VfsUtilCore.virtualToIoFile(file);
                ByteBuffer data;
                try {
                    data = ByteBufferUtil.mapFile(allocationsFile, 0, ByteOrder.BIG_ENDIAN);
                } catch (IOException ex) {
                    myErrorMessage = "Error reading from allocations file " + allocationsFile.getAbsolutePath();
                    throw new ProcessCanceledException();
                }

                if (AllocationsParser.hasOverflowedNumEntriesBug(data)) {
                    myErrorMessage = "Invalid allocations file detected. Please refer to https://code.google.com/p/android/issues/detail?id=204503 for details.";
                    throw new ProcessCanceledException();
                }

                try {
                    myAllocations = AllocationsParser.parse(data);
                } catch (final Throwable throwable) {
                    //noinspection ThrowableResultOfMethodCallIgnored
                    myErrorMessage = "Unexpected error while parsing allocations file: "
                            + Throwables.getRootCause(throwable).getMessage();
                    throw new ProcessCanceledException();
                }
            }

            @Override
            public void onSuccess() {
                AllocationsView view = new AllocationsView(project, myAllocations);
                myPanel.add(view.getComponent(), BorderLayout.CENTER);
            }

            @Override
            public void onCancel() {
                Messages.showErrorDialog(project, myErrorMessage, getName());
            }
        };

        ApplicationManager.getApplication().invokeLater(parseTask::queue);
    }

    @NotNull
    @Override
    public JComponent getComponent() {
        return myPanel;
    }

    @Nullable
    @Override
    public JComponent getPreferredFocusedComponent() {
        return null;
    }

    @NotNull
    @Override
    public String getName() {
        return "AllocationsView";
    }

    @NotNull
    @Override
    public FileEditorState getState(@NotNull FileEditorStateLevel level) {
        return FileEditorState.INSTANCE;
    }

    @Override
    public void setState(@NotNull FileEditorState state) {
    }

    @Override
    public boolean isModified() {
        return false;
    }

    @Override
    public boolean isValid() {
        return true;
    }

    @Override
    public void selectNotify() {
    }

    @Override
    public void deselectNotify() {
    }

    @Override
    public void addPropertyChangeListener(@NotNull PropertyChangeListener listener) {
    }

    @Override
    public void removePropertyChangeListener(@NotNull PropertyChangeListener listener) {
    }

    @Nullable
    @Override
    public BackgroundEditorHighlighter getBackgroundHighlighter() {
        return null;
    }

    @Nullable
    @Override
    public FileEditorLocation getCurrentLocation() {
        return null;
    }

    @Nullable
    @Override
    public StructureViewBuilder getStructureViewBuilder() {
        return null;
    }

    @Override
    public void dispose() {
    }

    @Nullable
    @Override
    public <T> T getUserData(@NotNull Key<T> key) {
        return null;
    }

    @Override
    public <T> void putUserData(@NotNull Key<T> key, @Nullable T value) {
    }
}