/*
* Copyright 2000-2016 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.ui.UISettings;
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.ui.JBUI;
import com.intellij.util.ui.UIUtil;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import javax.swing.*;
import java.awt.*;
public class EditorEmptyTextPainter {
public static EditorEmptyTextPainter ourInstance = new EditorEmptyTextPainter();
public void paintEmptyText(@NotNull final JComponent splitters, @NotNull Graphics g) {
UISettings.setupAntialiasing(g);
g.setColor(new JBColor(Gray._80, Gray._160));
g.setFont(JBUI.Fonts.label(16f));
UIUtil.TextPainter painter = new UIUtil.TextPainter().withLineSpacing(1.8f);
advertiseActions(splitters, painter);
painter.draw(g, (width, height) -> {
Dimension s = splitters.getSize();
int w = (s.width - width) / 2;
int h = (int)(s.height * heightRatio());
return Couple.of(w, h);
});
}
protected double heightRatio() {
return 0.375; // fix vertical position @ golden ratio
}
protected void advertiseActions(@NotNull JComponent splitters, @NotNull UIUtil.TextPainter painter) {
appendSearchEverywhere(painter);
appendToolWindow(painter, "Project View", ToolWindowId.PROJECT_VIEW, splitters);
appendAction(painter, "Go to File", getActionShortcutText("GotoFile"));
appendAction(painter, "Recent Files", getActionShortcutText(IdeActions.ACTION_RECENT_FILES));
appendAction(painter, "Navigation Bar", getActionShortcutText("ShowNavBar"));
appendDnd(painter);
}
protected void appendDnd(@NotNull UIUtil.TextPainter painter) {
appendLine(painter, "Drop files here to open");
}
protected void appendSearchEverywhere(@NotNull UIUtil.TextPainter painter) {
Shortcut[] shortcuts = KeymapManager.getInstance().getActiveKeymap().getShortcuts(IdeActions.ACTION_SEARCH_EVERYWHERE);
appendAction(painter, "Search Everywhere",
shortcuts.length == 0 ? "Double " + (SystemInfo.isMac ? MacKeymapUtil.SHIFT : "Shift") : KeymapUtil.getShortcutsText(shortcuts));
}
protected void appendToolWindow(@NotNull UIUtil.TextPainter painter, @NotNull String action, @NotNull String toolWindowId, @NotNull JComponent splitters) {
if (!isToolwindowVisible(splitters, toolWindowId)) {
String activateActionId = ActivateToolWindowAction.getActionIdForToolWindow(toolWindowId);
appendAction(painter, action, getActionShortcutText(activateActionId));
}
}
protected void appendAction(@NotNull UIUtil.TextPainter painter, @NotNull String action, @Nullable String shortcut) {
if (StringUtil.isEmpty(shortcut)) return;
appendLine(painter, action + " " + "<shortcut>" + shortcut + "</shortcut>");
}
protected void appendLine(@NotNull UIUtil.TextPainter painter, String line) {
painter.appendLine(line);
}
@NotNull
protected String getActionShortcutText(@NotNull String actionId) {
return KeymapUtil.getFirstKeyboardShortcutText(actionId);
}
protected static boolean isToolwindowVisible(@NotNull JComponent splitters, @NotNull String toolwindowId) {
Window frame = SwingUtilities.getWindowAncestor(splitters);
if (frame instanceof IdeFrameImpl) {
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;
}
}