Editor/display changes
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@ -1,216 +1,233 @@
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package org.solovyev.android.calculator.history;
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import org.jetbrains.annotations.NotNull;
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import org.jetbrains.annotations.Nullable;
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import org.solovyev.android.calculator.*;
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import org.solovyev.common.history.HistoryAction;
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import org.solovyev.common.history.HistoryHelper;
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import org.solovyev.common.history.SimpleHistoryHelper;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.List;
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import java.util.concurrent.atomic.AtomicInteger;
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import static org.solovyev.android.calculator.CalculatorEventType.display_state_changed;
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import static org.solovyev.android.calculator.CalculatorEventType.editor_state_changed;
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import static org.solovyev.android.calculator.CalculatorEventType.manual_calculation_requested;
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/**
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* User: Solovyev_S
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* Date: 20.09.12
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* Time: 16:12
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*/
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public class CalculatorHistoryImpl implements CalculatorHistory {
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private final AtomicInteger counter = new AtomicInteger(0);
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@NotNull
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private final HistoryHelper<CalculatorHistoryState> history = new SimpleHistoryHelper<CalculatorHistoryState>();
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@NotNull
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private final List<CalculatorHistoryState> savedHistory = new ArrayList<CalculatorHistoryState>();
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@NotNull
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private volatile CalculatorEventData lastEventDataId = CalculatorUtils.createFirstEventDataId();
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@Nullable
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private volatile CalculatorEditorViewState lastEditorViewState;
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public CalculatorHistoryImpl(@NotNull Calculator calculator) {
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calculator.addCalculatorEventListener(this);
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}
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@Override
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public boolean isEmpty() {
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synchronized (history) {
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return this.history.isEmpty();
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}
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}
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@Override
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public CalculatorHistoryState getLastHistoryState() {
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synchronized (history) {
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return this.history.getLastHistoryState();
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}
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}
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@Override
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public boolean isUndoAvailable() {
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synchronized (history) {
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return history.isUndoAvailable();
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}
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}
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@Override
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public CalculatorHistoryState undo(@Nullable CalculatorHistoryState currentState) {
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synchronized (history) {
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return history.undo(currentState);
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}
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}
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@Override
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public boolean isRedoAvailable() {
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return history.isRedoAvailable();
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}
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@Override
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public CalculatorHistoryState redo(@Nullable CalculatorHistoryState currentState) {
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synchronized (history) {
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return history.redo(currentState);
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}
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}
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@Override
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public boolean isActionAvailable(@NotNull HistoryAction historyAction) {
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synchronized (history) {
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return history.isActionAvailable(historyAction);
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}
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}
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@Override
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public CalculatorHistoryState doAction(@NotNull HistoryAction historyAction, @Nullable CalculatorHistoryState currentState) {
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synchronized (history) {
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return history.doAction(historyAction, currentState);
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}
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}
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@Override
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public void addState(@Nullable CalculatorHistoryState currentState) {
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synchronized (history) {
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history.addState(currentState);
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}
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}
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@NotNull
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@Override
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public List<CalculatorHistoryState> getStates() {
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synchronized (history) {
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return history.getStates();
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}
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}
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@Override
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public void clear() {
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synchronized (history) {
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this.history.clear();
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}
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}
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@Override
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@NotNull
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public List<CalculatorHistoryState> getSavedHistory() {
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return Collections.unmodifiableList(savedHistory);
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}
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@Override
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@NotNull
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public CalculatorHistoryState addSavedState(@NotNull CalculatorHistoryState historyState) {
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if (historyState.isSaved()) {
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return historyState;
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} else {
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final CalculatorHistoryState savedState = historyState.clone();
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savedState.setId(counter.incrementAndGet());
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savedState.setSaved(true);
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savedHistory.add(savedState);
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return savedState;
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}
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}
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@Override
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public void load() {
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// todo serso: create saved/loader class
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}
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@Override
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public void save() {
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// todo serso: create saved/loader class
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}
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@Override
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public void fromXml(@NotNull String xml) {
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clearSavedHistory();
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HistoryUtils.fromXml(xml, this.savedHistory);
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for (CalculatorHistoryState historyState : savedHistory) {
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historyState.setSaved(true);
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historyState.setId(counter.incrementAndGet());
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}
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}
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@Override
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public String toXml() {
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return HistoryUtils.toXml(this.savedHistory);
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}
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@Override
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public void clearSavedHistory() {
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this.savedHistory.clear();
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}
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@Override
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public void removeSavedHistory(@NotNull CalculatorHistoryState historyState) {
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this.savedHistory.remove(historyState);
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}
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@Override
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public void onCalculatorEvent(@NotNull CalculatorEventData calculatorEventData,
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@NotNull CalculatorEventType calculatorEventType,
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@Nullable Object data) {
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if (calculatorEventType.isOfType(editor_state_changed, display_state_changed, manual_calculation_requested)) {
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if (calculatorEventData.isAfter(this.lastEventDataId)) {
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final boolean sameSequence = calculatorEventData.isSameSequence(this.lastEventDataId);
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if (sameSequence || calculatorEventData.isAfterSequence(this.lastEventDataId)) {
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this.lastEventDataId = calculatorEventData;
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switch (calculatorEventType) {
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case manual_calculation_requested:
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lastEditorViewState = (CalculatorEditorViewState) data;
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break;
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case editor_state_changed:
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final CalculatorEditorChangeEventData editorChangeData = (CalculatorEditorChangeEventData) data;
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lastEditorViewState = editorChangeData.getNewState();
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break;
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case display_state_changed:
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if (sameSequence) {
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if (lastEditorViewState != null) {
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final CalculatorEditorViewState editorViewState = lastEditorViewState;
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final CalculatorDisplayChangeEventData displayChangeData = (CalculatorDisplayChangeEventData) data;
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final CalculatorDisplayViewState displayViewState = displayChangeData.getNewState();
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addState(CalculatorHistoryState.newInstance(editorViewState, displayViewState));
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}
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} else {
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lastEditorViewState = null;
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}
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break;
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}
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}
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}
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}
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}
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}
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package org.solovyev.android.calculator.history;
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import org.jetbrains.annotations.NotNull;
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import org.jetbrains.annotations.Nullable;
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import org.solovyev.android.calculator.*;
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import org.solovyev.common.history.HistoryAction;
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import org.solovyev.common.history.HistoryHelper;
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import org.solovyev.common.history.SimpleHistoryHelper;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.List;
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import java.util.concurrent.atomic.AtomicInteger;
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import static org.solovyev.android.calculator.CalculatorEventType.display_state_changed;
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import static org.solovyev.android.calculator.CalculatorEventType.editor_state_changed;
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import static org.solovyev.android.calculator.CalculatorEventType.manual_calculation_requested;
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/**
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* User: Solovyev_S
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* Date: 20.09.12
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* Time: 16:12
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*/
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public class CalculatorHistoryImpl implements CalculatorHistory {
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private final AtomicInteger counter = new AtomicInteger(0);
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@NotNull
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private final HistoryHelper<CalculatorHistoryState> history = new SimpleHistoryHelper<CalculatorHistoryState>();
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@NotNull
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private final List<CalculatorHistoryState> savedHistory = new ArrayList<CalculatorHistoryState>();
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@NotNull
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private volatile CalculatorEventData lastEventData = CalculatorUtils.createFirstEventDataId();
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@NotNull
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private final Object lastEventDataLock = new Object();
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@Nullable
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private volatile CalculatorEditorViewState lastEditorViewState;
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public CalculatorHistoryImpl(@NotNull Calculator calculator) {
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calculator.addCalculatorEventListener(this);
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}
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@Override
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public boolean isEmpty() {
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synchronized (history) {
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return this.history.isEmpty();
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}
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}
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@Override
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public CalculatorHistoryState getLastHistoryState() {
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synchronized (history) {
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return this.history.getLastHistoryState();
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}
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}
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@Override
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public boolean isUndoAvailable() {
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synchronized (history) {
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return history.isUndoAvailable();
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}
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}
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@Override
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public CalculatorHistoryState undo(@Nullable CalculatorHistoryState currentState) {
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synchronized (history) {
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return history.undo(currentState);
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}
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}
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@Override
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public boolean isRedoAvailable() {
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return history.isRedoAvailable();
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}
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@Override
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public CalculatorHistoryState redo(@Nullable CalculatorHistoryState currentState) {
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synchronized (history) {
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return history.redo(currentState);
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}
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}
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@Override
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public boolean isActionAvailable(@NotNull HistoryAction historyAction) {
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synchronized (history) {
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return history.isActionAvailable(historyAction);
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}
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}
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@Override
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public CalculatorHistoryState doAction(@NotNull HistoryAction historyAction, @Nullable CalculatorHistoryState currentState) {
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synchronized (history) {
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return history.doAction(historyAction, currentState);
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}
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}
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@Override
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public void addState(@Nullable CalculatorHistoryState currentState) {
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synchronized (history) {
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history.addState(currentState);
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}
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}
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@NotNull
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@Override
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public List<CalculatorHistoryState> getStates() {
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synchronized (history) {
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return history.getStates();
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}
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}
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@Override
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public void clear() {
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synchronized (history) {
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this.history.clear();
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}
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}
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@Override
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@NotNull
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public List<CalculatorHistoryState> getSavedHistory() {
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return Collections.unmodifiableList(savedHistory);
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}
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@Override
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@NotNull
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public CalculatorHistoryState addSavedState(@NotNull CalculatorHistoryState historyState) {
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if (historyState.isSaved()) {
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return historyState;
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} else {
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final CalculatorHistoryState savedState = historyState.clone();
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savedState.setId(counter.incrementAndGet());
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savedState.setSaved(true);
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savedHistory.add(savedState);
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return savedState;
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}
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}
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@Override
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public void load() {
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// todo serso: create saved/loader class
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}
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@Override
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public void save() {
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// todo serso: create saved/loader class
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}
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@Override
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public void fromXml(@NotNull String xml) {
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clearSavedHistory();
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HistoryUtils.fromXml(xml, this.savedHistory);
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for (CalculatorHistoryState historyState : savedHistory) {
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historyState.setSaved(true);
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historyState.setId(counter.incrementAndGet());
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}
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}
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@Override
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public String toXml() {
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return HistoryUtils.toXml(this.savedHistory);
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}
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@Override
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public void clearSavedHistory() {
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this.savedHistory.clear();
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}
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@Override
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public void removeSavedHistory(@NotNull CalculatorHistoryState historyState) {
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this.savedHistory.remove(historyState);
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}
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@Override
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public void onCalculatorEvent(@NotNull CalculatorEventData calculatorEventData,
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@NotNull CalculatorEventType calculatorEventType,
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@Nullable Object data) {
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if (calculatorEventType.isOfType(editor_state_changed, display_state_changed, manual_calculation_requested)) {
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boolean sameSequence = false;
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boolean afterSequence = false;
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boolean processEvent = false;
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synchronized (this.lastEventDataLock) {
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if (calculatorEventData.isAfter(this.lastEventData)) {
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sameSequence = calculatorEventData.isSameSequence(this.lastEventData);
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if (!sameSequence) {
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afterSequence = calculatorEventData.isAfterSequence(this.lastEventData);
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processEvent = afterSequence;
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} else {
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processEvent = true;
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}
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}
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}
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if (processEvent) {
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this.lastEventData = calculatorEventData;
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switch (calculatorEventType) {
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case manual_calculation_requested:
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lastEditorViewState = (CalculatorEditorViewState) data;
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break;
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case editor_state_changed:
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final CalculatorEditorChangeEventData editorChangeData = (CalculatorEditorChangeEventData) data;
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lastEditorViewState = editorChangeData.getNewState();
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break;
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case display_state_changed:
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if (sameSequence) {
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if (lastEditorViewState != null) {
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final CalculatorEditorViewState editorViewState = lastEditorViewState;
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final CalculatorDisplayChangeEventData displayChangeData = (CalculatorDisplayChangeEventData) data;
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final CalculatorDisplayViewState displayViewState = displayChangeData.getNewState();
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addState(CalculatorHistoryState.newInstance(editorViewState, displayViewState));
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}
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} else {
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lastEditorViewState = null;
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}
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break;
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}
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}
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}
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}
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}
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