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/*
* Copyright 2000-2014 JetBrains s.r.o.
*
* 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.intellij.openapi.fileEditor.impl;
import com.intellij.ide.actions.ActivateToolWindowAction;
import com.intellij.ide.actions.ShowFilePathAction;
import com.intellij.openapi.actionSystem.IdeActions;
import com.intellij.openapi.actionSystem.Shortcut;
import com.intellij.openapi.keymap.KeymapManager;
import com.intellij.openapi.keymap.KeymapUtil;
import com.intellij.openapi.keymap.MacKeymapUtil;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.util.Couple;
import com.intellij.openapi.util.SystemInfo;
import com.intellij.openapi.util.text.StringUtil;
import com.intellij.openapi.wm.ToolWindow;
import com.intellij.openapi.wm.ToolWindowId;
import com.intellij.openapi.wm.ToolWindowManager;
import com.intellij.openapi.wm.impl.IdeFrameImpl;
import com.intellij.ui.Gray;
import com.intellij.ui.JBColor;
import com.intellij.util.PairFunction;
import com.intellij.util.ui.GraphicsUtil;
import com.intellij.util.ui.UIUtil;
import javax.swing.*;
import java.awt.*;
/**
* @author gregsh
*/
public class EditorEmptyTextPainter {
public void paintEmptyText(final EditorsSplitters splitters, Graphics g) {
boolean isDarkBackground = UIUtil.isUnderDarcula();
UIUtil.applyRenderingHints(g);
GraphicsUtil.setupAntialiasing(g, true, false);
g.setColor(new JBColor(isDarkBackground ? Gray._230 : Gray._80, Gray._160));
g.setFont(UIUtil.getLabelFont().deriveFont(isDarkBackground ? 24f : 20f));
UIUtil.TextPainter painter = new UIUtil.TextPainter().withLineSpacing(1.5f);
painter.withShadow(true, new JBColor(Gray._200.withAlpha(100), Gray._0.withAlpha(255)));
painter.appendLine("No files are open");
if (!splitters.isPreview()) {
painter.underlined(new JBColor(Gray._150, Gray._180));
advertiseActions(splitters, painter);
}
painter.draw(g, new PairFunction<Integer, Integer, Couple<Integer>>() {
@Override
public Couple<Integer> fun(Integer width, Integer height) {
Dimension s = splitters.getSize();
return Couple.of((s.width - width) / 2, (s.height - height) / 2);
}
});
}
protected void advertiseActions(EditorsSplitters splitters, UIUtil.TextPainter painter) {
appendSearchEverywhere(painter);
appendToolWindow(painter, "Open Project View", ToolWindowId.PROJECT_VIEW, splitters);
appendAction(painter, "Open a file by name", getActionShortcutText("GotoFile"));
appendAction(painter, "Open Recent Files", getActionShortcutText(IdeActions.ACTION_RECENT_FILES));
appendAction(painter, "Open Navigation Bar", getActionShortcutText("ShowNavBar"));
appendLine(painter, "Drag and Drop file(s) here from " + ShowFilePathAction.getFileManagerName());
}
protected void appendSearchEverywhere(UIUtil.TextPainter painter) {
Shortcut[] shortcuts = KeymapManager.getInstance().getActiveKeymap().getShortcuts(IdeActions.ACTION_SEARCH_EVERYWHERE);
if (shortcuts.length == 0) {
appendAction(painter, "Search Everywhere", "Double " + (SystemInfo.isMac ? MacKeymapUtil.SHIFT : "Shift"));
}
else {
appendAction(painter, "Search Everywhere", KeymapUtil.getShortcutsText(shortcuts));
}
}
protected void appendToolWindow(UIUtil.TextPainter painter, String action, String toolWindowId, EditorsSplitters splitters) {
if (!isToolwindowVisible(splitters, toolWindowId)) {
String activateActionId = ActivateToolWindowAction.getActionIdForToolWindow(toolWindowId);
appendAction(painter, action, getActionShortcutText(activateActionId));
}
}
protected void appendAction(UIUtil.TextPainter painter, String action, String shortcut) {
if (StringUtil.isEmpty(shortcut)) return;
appendLine(painter, action + " with " + "<shortcut>" + shortcut + "</shortcut>");
}
protected void appendLine(UIUtil.TextPainter painter, String line) {
painter.appendLine(line).smaller().withBullet();
}
protected String getActionShortcutText(String actionId) {
return KeymapUtil.getFirstKeyboardShortcutText(actionId);
}
protected static boolean isToolwindowVisible(EditorsSplitters splitters, String toolwindowId) {
final Window frame = SwingUtilities.getWindowAncestor(splitters);
if (frame instanceof IdeFrameImpl) {
final Project project = ((IdeFrameImpl)frame).getProject();
if (project != null) {
if (!project.isInitialized()) return true;
ToolWindow toolWindow = ToolWindowManager.getInstance(project).getToolWindow(toolwindowId);
return toolWindow != null && toolWindow.isVisible();
}
}
return false;
}
}
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