/*
* Copyright 2013 serso aka se.solovyev
*
* 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.
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* Contact details
*
* Email: se.solovyev@gmail.com
* Site: http://se.solovyev.org
*/
package org.solovyev.android.calculator;
import android.app.Application;
import android.content.Context;
import android.support.annotation.NonNull;
import com.squareup.otto.Bus;
import com.squareup.otto.Subscribe;
import org.solovyev.android.Check;
import org.solovyev.android.calculator.calculations.CalculationCancelledEvent;
import org.solovyev.android.calculator.calculations.CalculationFailedEvent;
import org.solovyev.android.calculator.calculations.CalculationFinishedEvent;
import org.solovyev.android.calculator.calculations.ConversionFailedEvent;
import org.solovyev.android.calculator.calculations.ConversionFinishedEvent;
import org.solovyev.android.calculator.errors.FixableErrorsActivity;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import javax.inject.Inject;
import javax.inject.Singleton;
import dagger.Lazy;
@Singleton
public class Display {
@Nonnull
private final Bus bus;
@Inject
Application application;
@Inject
Engine engine;
@Inject
Lazy<Clipboard> clipboard;
@Inject
Lazy<Notifier> notifier;
@Inject
Lazy<UiPreferences> uiPreferences;
@Nullable
private DisplayView view;
@Nonnull
private DisplayState state = DisplayState.empty();
@Inject
public Display(@Nonnull Bus bus) {
this.bus = bus;
bus.register(this);
}
@Subscribe
public void onCopy(@Nonnull CopyOperation o) {
copy();
}
void copy() {
if (!state.valid) {
return;
}
clipboard.get().setText(state.text);
notifier.get().showMessage(R.string.cpp_text_copied);
}
@Subscribe
public void onCalculationFinished(@Nonnull CalculationFinishedEvent e) {
if (e.sequence < state.sequence) return;
setState(DisplayState.createValid(e.operation, e.result, e.stringResult, e.sequence));
if (!e.messages.isEmpty() && uiPreferences.get().isShowFixableErrorDialog()) {
final Context context = view != null ? view.getContext() : application;
FixableErrorsActivity.show(context, e.messages);
}
}
@Subscribe
public void onCalculationCancelled(@Nonnull CalculationCancelledEvent e) {
if (e.sequence < state.sequence) return;
final String error = CalculatorMessages.getBundle().getString(CalculatorMessages.syntax_error);
setState(DisplayState.createError(e.operation, error, e.sequence));
}
@Subscribe
public void onCalculationFailed(@Nonnull CalculationFailedEvent e) {
if (e.sequence < state.sequence) return;
final String error;
if (e.exception instanceof ParseException) {
error = e.exception.getLocalizedMessage();
} else {
error = CalculatorMessages.getBundle().getString(CalculatorMessages.syntax_error);
}
setState(DisplayState.createError(e.operation, error, e.sequence));
}
@Subscribe
public void onConversionFinished(@NonNull ConversionFinishedEvent e) {
if (e.state.sequence != state.sequence) return;
final String result = e.numeralBase.getJsclPrefix() + e.result;
setState(DisplayState.createValid(e.state.getOperation(), e.state.getResult(), result,
e.state.sequence));
}
@Subscribe
public void onConversionFailed(@NonNull ConversionFailedEvent e) {
if (e.state.sequence != state.sequence) return;
setState(DisplayState.createError(e.state.getOperation(),
CalculatorMessages.getBundle().getString(CalculatorMessages.syntax_error),
e.state.sequence));
}
public void clearView(@Nonnull DisplayView view) {
Check.isMainThread();
if (this.view != view) {
return;
}
this.view = null;
}
public void setView(@Nonnull DisplayView view) {
Check.isMainThread();
this.view = view;
this.view.setState(state);
this.view.setEngine(engine);
}
@Nonnull
public DisplayState getState() {
Check.isMainThread();
return state;
}
public void setState(@Nonnull DisplayState newState) {
Check.isMainThread();
final DisplayState oldState = state;
state = newState;
if (view != null) {
view.setState(newState);
}
bus.post(new ChangedEvent(oldState, newState));
}
public static class CopyOperation {
}
public static class ChangedEvent {
@Nonnull
public final DisplayState oldState;
@Nonnull
public final DisplayState newState;
public ChangedEvent(@Nonnull DisplayState oldState, @Nonnull DisplayState newState) {
this.oldState = oldState;
this.newState = newState;
}
}
}