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long click menu on operators screen

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This commit is contained in:
Sergey Solovyev 2011-12-25 15:07:07 +04:00
parent 1dbec40d12
commit 488507c447
1 changed files with 51 additions and 4 deletions
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55
src/main/java/org/solovyev/android/calculator/math/edit/CalculatorOperatorsActivity.java
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@ -1,14 +1,18 @@
package org.solovyev.android.calculator.math.edit; package org.solovyev.android.calculator.math.edit;
import android.app.Activity;
import android.content.Context; import android.content.Context;
import android.text.ClipboardManager;
import jscl.math.operator.Operator; import jscl.math.operator.Operator;
import org.jetbrains.annotations.NotNull; import org.jetbrains.annotations.NotNull;
import org.solovyev.android.calculator.CalculatorModel;
import org.solovyev.android.calculator.R;
import org.solovyev.android.calculator.model.CalculatorEngine; import org.solovyev.android.calculator.model.CalculatorEngine;
import org.solovyev.android.view.AMenuItem; import org.solovyev.android.view.AMenuItem;
import org.solovyev.common.utils.StringUtils; import org.solovyev.common.utils.StringUtils;
import java.util.ArrayList; import java.util.ArrayList;
import java.util.Collections; import java.util.Arrays;
import java.util.List; import java.util.List;
/** /**
@ -19,16 +23,57 @@ import java.util.List;
public class CalculatorOperatorsActivity extends AbstractMathEntityListActivity<Operator> { public class CalculatorOperatorsActivity extends AbstractMathEntityListActivity<Operator> {
private static enum LongClickMenuItem implements AMenuItem<Operator> {
use(R.string.c_use) {
@Override
public void doAction(@NotNull Operator data, @NotNull Context context) {
CalculatorModel.instance.processDigitButtonAction(data.getName(), false);
if (context instanceof Activity) {
((Activity) context).finish();
}
}
},
copy_description(R.string.c_copy_description) {
@Override
public void doAction(@NotNull Operator data, @NotNull Context context) {
final String text = OperatorDescriptionGetter.instance.getDescription(context, data.getName());
if (!StringUtils.isEmpty(text)) {
final ClipboardManager clipboard = (ClipboardManager) context.getSystemService(Activity.CLIPBOARD_SERVICE);
clipboard.setText(text);
}
}
};
private final int captionId;
LongClickMenuItem(int captionId) {
this.captionId = captionId;
}
@NotNull
@Override
public String getCaption(@NotNull Context context) {
return context.getString(captionId);
}
}
@NotNull @NotNull
@Override @Override
protected List<AMenuItem<Operator>> getMenuItemsOnLongClick(@NotNull Operator item) { protected List<AMenuItem<Operator>> getMenuItemsOnLongClick(@NotNull Operator item) {
return Collections.emptyList(); final List<AMenuItem<Operator>> result = new ArrayList<AMenuItem<Operator>>(Arrays.asList(LongClickMenuItem.values()));
if ( StringUtils.isEmpty(OperatorDescriptionGetter.instance.getDescription(this, item.getName())) ) {
result.remove(LongClickMenuItem.copy_description);
}
return result;
} }
@NotNull @NotNull
@Override @Override
protected MathEntityDescriptionGetter getDescriptionGetter() { protected MathEntityDescriptionGetter getDescriptionGetter() {
return new OperatorDescriptionGetter(); return OperatorDescriptionGetter.instance;
} }
@ -53,7 +98,9 @@ public class CalculatorOperatorsActivity extends AbstractMathEntityListActivity<
return result; return result;
} }
private static class OperatorDescriptionGetter implements MathEntityDescriptionGetter { private static enum OperatorDescriptionGetter implements MathEntityDescriptionGetter {
instance;
@Override @Override
public String getDescription(@NotNull Context context, @NotNull String mathEntityName) { public String getDescription(@NotNull Context context, @NotNull String mathEntityName) {