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IDEA-65902 Enable horizontal Scrolling with Mouse
This commit is contained in:
Konstantin Bulenkov
+106
-69
@@ -21,74 +21,71 @@ import com.intellij.openapi.actionSystem.ex.ActionManagerEx;
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import com.intellij.openapi.actionSystem.impl.PresentationFactory;
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import com.intellij.openapi.keymap.Keymap;
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import com.intellij.openapi.keymap.KeymapManager;
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import com.intellij.openapi.util.SystemInfo;
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import com.intellij.openapi.wm.impl.IdeGlassPaneImpl;
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import com.intellij.util.containers.HashMap;
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import com.intellij.util.ui.UIUtil;
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import org.jetbrains.annotations.Nullable;
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import javax.swing.*;
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import java.awt.*;
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import java.awt.event.MouseEvent;
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import java.awt.event.MouseWheelEvent;
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import java.util.ArrayList;
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import java.util.Map;
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/**
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* TODO[vova] rewrite comments
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* Current implementation of the dispatcher is intended to filter mouse event addressed to
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* the editor. Also it allows to map middle mouse's button to some action.
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*
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* @author Vladimir Kondratyev
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* @author Konstantin Bulenkov
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*/
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public final class IdeMouseEventDispatcher{
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private final PresentationFactory myPresentationFactory;
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private final ArrayList<AnAction> myActions;
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public final class IdeMouseEventDispatcher {
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private final PresentationFactory myPresentationFactory = new PresentationFactory();
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private final ArrayList<AnAction> myActions = new ArrayList<AnAction>(1);
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private final Map<Container, Integer> myRootPane2BlockedId = new HashMap<Container, Integer>();
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public IdeMouseEventDispatcher(){
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myPresentationFactory=new PresentationFactory();
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myActions=new ArrayList<AnAction>(1);
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public IdeMouseEventDispatcher() {
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}
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private void fillActionsList(Component component,MouseShortcut shortcut,boolean isModalContext){
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private void fillActionsList(Component component, MouseShortcut mouseShortcut, boolean isModalContext) {
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myActions.clear();
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// here we try to find "local" shortcuts
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if(component instanceof JComponent){
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ArrayList<AnAction> listOfActions = (ArrayList<AnAction>)((JComponent)component).getClientProperty(AnAction.ourClientProperty);
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if (component instanceof JComponent) {
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final ArrayList<AnAction> listOfActions = (ArrayList<AnAction>)((JComponent)component).getClientProperty(AnAction.ourClientProperty);
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if (listOfActions != null) {
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for (AnAction action : listOfActions) {
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Shortcut[] shortcuts = action.getShortcutSet().getShortcuts();
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for (Shortcut shortcut1 : shortcuts) {
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if (shortcut.equals(shortcut1) && !myActions.contains(action)) {
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final Shortcut[] shortcuts = action.getShortcutSet().getShortcuts();
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for (Shortcut shortcut : shortcuts) {
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if (mouseShortcut.equals(shortcut) && !myActions.contains(action)) {
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myActions.add(action);
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}
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}
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}
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// once we've found a proper local shortcut(s), we exit
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if (!myActions.isEmpty()) {
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if (! myActions.isEmpty()) {
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return;
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}
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}
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}
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// search in main keymap
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if (KeymapManagerImpl.ourKeymapManagerInitialized) {
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KeymapManager keymapManager = KeymapManager.getInstance();
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final KeymapManager keymapManager = KeymapManager.getInstance();
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if (keymapManager != null) {
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Keymap keymap = keymapManager.getActiveKeymap();
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String[] actionIds=keymap.getActionIds(shortcut);
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final Keymap keymap = keymapManager.getActiveKeymap();
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final String[] actionIds = keymap.getActionIds(mouseShortcut);
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ActionManager actionManager = ActionManager.getInstance();
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for (String actionId : actionIds) {
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AnAction action = actionManager.getAction(actionId);
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if (action == null) {
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continue;
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}
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if (isModalContext && !action.isEnabledInModalContext()) {
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continue;
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}
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if (action == null) continue;
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if (isModalContext && !action.isEnabledInModalContext()) continue;
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if (!myActions.contains(action)) {
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myActions.add(action);
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}
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@@ -99,84 +96,87 @@ public final class IdeMouseEventDispatcher{
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/**
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* @return <code>true</code> if and only if the passed event is already dispatched by the
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* <code>IdeMouseEventDispatcher</code> and there is no need for any other processing of the event.
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* If the method returns <code>false</code> then it means that the event should be delivered
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* to normal event dispatching.
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* <code>IdeMouseEventDispatcher</code> and there is no need for any other processing of the event.
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* If the method returns <code>false</code> then it means that the event should be delivered
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* to normal event dispatching.
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*/
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public boolean dispatchMouseEvent(MouseEvent e){
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boolean toIgnore = false;
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public boolean dispatchMouseEvent(MouseEvent e) {
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boolean ignore = false;
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if (!(e.getID() == MouseEvent.MOUSE_PRESSED ||
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e.getID() == MouseEvent.MOUSE_RELEASED ||
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e.getID() == MouseEvent.MOUSE_CLICKED)) {
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toIgnore = true;
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ignore = true;
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}
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if(
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e.isConsumed()||
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e.isPopupTrigger()||
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MouseEvent.MOUSE_RELEASED!=e.getID()||
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e.getClickCount()<1 ||// TODO[vova,anton] is it possible. it seems that yes! but how???
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e.getButton() == MouseEvent.NOBUTTON // See #16995. It did happen
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){
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toIgnore = true;
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if (e.isConsumed()
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|| e.isPopupTrigger()
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|| MouseEvent.MOUSE_RELEASED != e.getID()
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|| e.getClickCount() < 1 // TODO[vova,anton] is it possible. it seems that yes! but how???
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|| e.getButton() == MouseEvent.NOBUTTON) { // See #16995. It did happen
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ignore = true;
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}
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JRootPane root = findRoot(e);
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final JRootPane root = findRoot(e);
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if (root != null) {
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final Integer lastId = myRootPane2BlockedId.get(root);
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if (lastId != null) {
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if (e.getID() <= lastId.intValue()) {
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myRootPane2BlockedId.remove(root);
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} else {
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}
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else {
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myRootPane2BlockedId.put(root, e.getID());
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return true;
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}
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}
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}
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if (toIgnore) return false;
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Component component=e.getComponent();
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if(component==null){
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Component component = e.getComponent();
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if (component == null) {
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throw new IllegalStateException("component cannot be null");
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}
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component=SwingUtilities.getDeepestComponentAt(component,e.getX(),e.getY());
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component = SwingUtilities.getDeepestComponentAt(component, e.getX(), e.getY());
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if (component instanceof IdeGlassPaneImpl) {
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component = ((IdeGlassPaneImpl)component).getTargetComponentFor(e);
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}
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if(component==null){ // do nothing if component doesn't contains specified point
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if (component == null) { // do nothing if component doesn't contains specified point
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return false;
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}
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if (isHorizontalScrolling(component, e)) {
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boolean done = doHorizontalScrolling(component, (MouseWheelEvent)e);
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if (done) return true;
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}
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if (ignore) return false;
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// avoid "cyclic component initialization error" in case of dialogs shown because of component initialization failure
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if (!KeymapManagerImpl.ourKeymapManagerInitialized) {
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return false;
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}
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MouseShortcut shortcut=new MouseShortcut(e.getButton(),e.getModifiersEx(),e.getClickCount());
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fillActionsList(component,shortcut,IdeKeyEventDispatcher.isModalContext(component));
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ActionManagerEx actionManager=ActionManagerEx.getInstanceEx();
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final MouseShortcut shortcut = new MouseShortcut(e.getButton(), e.getModifiersEx(), e.getClickCount());
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fillActionsList(component, shortcut, IdeKeyEventDispatcher.isModalContext(component));
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ActionManagerEx actionManager = ActionManagerEx.getInstanceEx();
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if (actionManager != null) {
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for(int i=0;i<myActions.size();i++){
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AnAction action=myActions.get(i);
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DataContext dataContext=DataManager.getInstance().getDataContext(component);
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Presentation presentation=myPresentationFactory.getPresentation(action);
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AnActionEvent actionEvent=new AnActionEvent(e,dataContext,ActionPlaces.MAIN_MENU,presentation,
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ActionManager.getInstance(),
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e.getModifiers());
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for (AnAction action : myActions) {
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DataContext dataContext = DataManager.getInstance().getDataContext(component);
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Presentation presentation = myPresentationFactory.getPresentation(action);
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AnActionEvent actionEvent = new AnActionEvent(e, dataContext, ActionPlaces.MAIN_MENU, presentation,
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ActionManager.getInstance(),
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e.getModifiers());
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action.beforeActionPerformedUpdate(actionEvent);
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if(presentation.isEnabled()){
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if (presentation.isEnabled()) {
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actionManager.fireBeforeActionPerformed(action, dataContext, actionEvent);
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Component c = PlatformDataKeys.CONTEXT_COMPONENT.getData(dataContext);
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if (c != null && !c.isShowing()) {
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continue;
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}
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final Component c = PlatformDataKeys.CONTEXT_COMPONENT.getData(dataContext);
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if (c != null && !c.isShowing()) continue;
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action.actionPerformed(actionEvent);
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e.consume();
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}
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@@ -185,23 +185,60 @@ public final class IdeMouseEventDispatcher{
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return false;
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}
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private static boolean doHorizontalScrolling(Component c, MouseWheelEvent me) {
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final JScrollPane pane = findScrollPane(c);
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if (pane != null && pane.isWheelScrollingEnabled()) {
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final JScrollBar scrollBar = pane.getHorizontalScrollBar();
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if (scrollBar != null) {
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int totalScrollAmount = me.getUnitsToScroll() * scrollBar.getUnitIncrement() * 3;
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scrollBar.setValue(scrollBar.getValue() + totalScrollAmount);
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return true;
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}
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}
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return false;
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}
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private static boolean isHorizontalScrolling(Component c, MouseEvent e) {
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if (!SystemInfo.isMac && e instanceof MouseWheelEvent) {
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final MouseWheelEvent mwe = (MouseWheelEvent)e;
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return mwe.isShiftDown()
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&& mwe.getScrollType() == MouseWheelEvent.WHEEL_UNIT_SCROLL
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&& findScrollPane(c) != null;
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}
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return false;
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}
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@Nullable
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private static JScrollPane findScrollPane(Component c) {
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if (c == null) return null;
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if (c instanceof JScrollPane) {
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return (JScrollPane)c;
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}
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return findScrollPane(c.getParent());
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}
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public void blockNextEvents(final MouseEvent e) {
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JRootPane root = findRoot(e);
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final JRootPane root = findRoot(e);
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if (root == null) return;
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myRootPane2BlockedId.put(root, e.getID());
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}
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private JRootPane findRoot(MouseEvent e) {
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Component parent = UIUtil.findUltimateParent(e.getComponent());
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@Nullable
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private static JRootPane findRoot(MouseEvent e) {
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final Component parent = UIUtil.findUltimateParent(e.getComponent());
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JRootPane root = null;
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if (parent instanceof JWindow) {
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root = ((JWindow)parent).getRootPane();
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} else if (parent instanceof JDialog) {
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}
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else if (parent instanceof JDialog) {
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root = ((JDialog)parent).getRootPane();
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} else if (parent instanceof JFrame) {
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}
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else if (parent instanceof JFrame) {
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root = ((JFrame)parent).getRootPane();
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}
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return root;
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}
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}
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