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Diffstat (limited to 'src/com/vaadin/event/ActionManager.java')
| -rw-r--r-- | src/com/vaadin/event/ActionManager.java | 249 |
1 files changed, 0 insertions, 249 deletions
diff --git a/src/com/vaadin/event/ActionManager.java b/src/com/vaadin/event/ActionManager.java deleted file mode 100644 index 64fdeea69b..0000000000 --- a/src/com/vaadin/event/ActionManager.java +++ /dev/null @@ -1,249 +0,0 @@ -/* -@VaadinApache2LicenseForJavaFiles@ - */ -package com.vaadin.event; - -import java.util.HashSet; -import java.util.Map; - -import com.vaadin.event.Action.Container; -import com.vaadin.event.Action.Handler; -import com.vaadin.terminal.KeyMapper; -import com.vaadin.terminal.PaintException; -import com.vaadin.terminal.PaintTarget; -import com.vaadin.terminal.VariableOwner; -import com.vaadin.ui.Component; - -/** - * Javadoc TODO - * - * Notes: - * <p> - * Empties the keymapper for each repaint to avoid leaks; can cause problems in - * the future if the client assumes key don't change. (if lazyloading, one must - * not cache results) - * </p> - * - * - */ -public class ActionManager implements Action.Container, Action.Handler, - Action.Notifier { - - private static final long serialVersionUID = 1641868163608066491L; - - /** List of action handlers */ - protected HashSet<Action> ownActions = null; - - /** List of action handlers */ - protected HashSet<Handler> actionHandlers = null; - - /** Action mapper */ - protected KeyMapper<Action> actionMapper = null; - - protected Component viewer; - - private boolean clientHasActions = false; - - public ActionManager() { - - } - - public <T extends Component & Container & VariableOwner> ActionManager( - T viewer) { - this.viewer = viewer; - } - - private void requestRepaint() { - if (viewer != null) { - viewer.requestRepaint(); - } - } - - public <T extends Component & Container & VariableOwner> void setViewer( - T viewer) { - if (viewer == this.viewer) { - return; - } - if (this.viewer != null) { - ((Container) this.viewer).removeActionHandler(this); - } - requestRepaint(); // this goes to the old viewer - if (viewer != null) { - viewer.addActionHandler(this); - } - this.viewer = viewer; - requestRepaint(); // this goes to the new viewer - } - - @Override - public <T extends Action & Action.Listener> void addAction(T action) { - if (ownActions == null) { - ownActions = new HashSet<Action>(); - } - if (ownActions.add(action)) { - requestRepaint(); - } - } - - @Override - public <T extends Action & Action.Listener> void removeAction(T action) { - if (ownActions != null) { - if (ownActions.remove(action)) { - requestRepaint(); - } - } - } - - @Override - public void addActionHandler(Handler actionHandler) { - if (actionHandler == this) { - // don't add the actionHandler to itself - return; - } - if (actionHandler != null) { - - if (actionHandlers == null) { - actionHandlers = new HashSet<Handler>(); - } - - if (actionHandlers.add(actionHandler)) { - requestRepaint(); - } - } - } - - @Override - public void removeActionHandler(Action.Handler actionHandler) { - if (actionHandlers != null && actionHandlers.contains(actionHandler)) { - - if (actionHandlers.remove(actionHandler)) { - requestRepaint(); - } - if (actionHandlers.isEmpty()) { - actionHandlers = null; - } - - } - } - - public void removeAllActionHandlers() { - if (actionHandlers != null) { - actionHandlers = null; - requestRepaint(); - } - } - - public void paintActions(Object actionTarget, PaintTarget paintTarget) - throws PaintException { - - actionMapper = null; - - HashSet<Action> actions = new HashSet<Action>(); - if (actionHandlers != null) { - for (Action.Handler handler : actionHandlers) { - Action[] as = handler.getActions(actionTarget, viewer); - if (as != null) { - for (Action action : as) { - actions.add(action); - } - } - } - } - if (ownActions != null) { - actions.addAll(ownActions); - } - - /* - * Must repaint whenever there are actions OR if all actions have been - * removed but still exist on client side - */ - if (!actions.isEmpty() || clientHasActions) { - actionMapper = new KeyMapper<Action>(); - - paintTarget.addVariable((VariableOwner) viewer, "action", ""); - paintTarget.startTag("actions"); - - for (final Action a : actions) { - paintTarget.startTag("action"); - final String akey = actionMapper.key(a); - paintTarget.addAttribute("key", akey); - if (a.getCaption() != null) { - paintTarget.addAttribute("caption", a.getCaption()); - } - if (a.getIcon() != null) { - paintTarget.addAttribute("icon", a.getIcon()); - } - if (a instanceof ShortcutAction) { - final ShortcutAction sa = (ShortcutAction) a; - paintTarget.addAttribute("kc", sa.getKeyCode()); - final int[] modifiers = sa.getModifiers(); - if (modifiers != null) { - final String[] smodifiers = new String[modifiers.length]; - for (int i = 0; i < modifiers.length; i++) { - smodifiers[i] = String.valueOf(modifiers[i]); - } - paintTarget.addAttribute("mk", smodifiers); - } - } - paintTarget.endTag("action"); - } - - paintTarget.endTag("actions"); - } - - /* - * Update flag for next repaint so we know if we need to paint empty - * actions or not (must send actions is client had actions before and - * all actions were removed). - */ - clientHasActions = !actions.isEmpty(); - } - - public void handleActions(Map<String, Object> variables, Container sender) { - if (variables.containsKey("action") && actionMapper != null) { - final String key = (String) variables.get("action"); - final Action action = actionMapper.get(key); - final Object target = variables.get("actiontarget"); - if (action != null) { - handleAction(action, sender, target); - } - } - } - - @Override - public Action[] getActions(Object target, Object sender) { - HashSet<Action> actions = new HashSet<Action>(); - if (ownActions != null) { - for (Action a : ownActions) { - actions.add(a); - } - } - if (actionHandlers != null) { - for (Action.Handler h : actionHandlers) { - Action[] as = h.getActions(target, sender); - if (as != null) { - for (Action a : as) { - actions.add(a); - } - } - } - } - return actions.toArray(new Action[actions.size()]); - } - - @Override - public void handleAction(Action action, Object sender, Object target) { - if (actionHandlers != null) { - Handler[] array = actionHandlers.toArray(new Handler[actionHandlers - .size()]); - for (Handler handler : array) { - handler.handleAction(action, sender, target); - } - } - if (ownActions != null && ownActions.contains(action) - && action instanceof Action.Listener) { - ((Action.Listener) action).handleAction(sender, target); - } - } - -} |