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context menu for display

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This commit is contained in:
Sergey Solovyev 2012-01-10 18:50:43 +04:00
parent a5b68d0d91
commit c3d1a877e7
1 changed files with 70 additions and 0 deletions
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70
src/main/java/org/solovyev/android/calculator/CalculatorDisplay.java
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@ -11,14 +11,21 @@ import android.text.Html;
import android.util.AttributeSet;
import android.util.Log;
import jscl.math.Generic;
import jscl.math.function.Constant;
import jscl.math.function.IConstant;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.solovyev.android.calculator.jscl.JsclOperation;
import org.solovyev.android.calculator.model.CalculatorEngine;
import org.solovyev.android.calculator.model.CalculatorParseException;
import org.solovyev.android.calculator.model.TextProcessor;
import org.solovyev.android.view.AMenuBuilder;
import org.solovyev.android.view.AMenuItem;
import org.solovyev.android.view.AutoResizeTextView;
import java.util.HashSet;
import java.util.Set;
/**
* User: serso
* Date: 9/17/11
@ -26,6 +33,69 @@ import org.solovyev.android.view.AutoResizeTextView;
*/
public class CalculatorDisplay extends AutoResizeTextView implements ICalculatorDisplay{
public static enum Menu implements AMenuItem<CalculatorDisplay> {
to_bin(0) {
@Override
public void doAction(@NotNull CalculatorDisplay data, @NotNull Context context) {
//To change body of implemented methods use File | Settings | File Templates.
}
@Override
protected boolean isItemVisibleFor(@NotNull Generic generic, @NotNull JsclOperation operation) {
return false;
}
},
plot(R.string.c_plot_graph) {
@Override
public void doAction(@NotNull CalculatorDisplay data, @NotNull Context context) {
//To change body of implemented methods use File | Settings | File Templates.
}
@Override
protected boolean isItemVisibleFor(@NotNull Generic generic, @NotNull JsclOperation operation) {
boolean result = false;
if (operation == JsclOperation.simplify) {
final Set<Constant> notSystemConstants = new HashSet<Constant>();
for (Constant constant : generic.getConstants()) {
IConstant var = CalculatorEngine.instance.getVarsRegistry().get(constant.getName());
if (var != null && !var.isSystem() && !var.isDefined()) {
notSystemConstants.add(constant);
}
}
if (notSystemConstants.size() == 1) {
result = true;
}
}
return result;
}
};
private final int captionId;
Menu(int captionId) {
this.captionId = captionId;
}
public final boolean isItemVisible(@NotNull CalculatorDisplay display) {
//noinspection ConstantConditions
return display.isValid() && display.getGenericResult() != null && isItemVisibleFor(display.getGenericResult(), display.getJsclOperation());
}
protected boolean isItemVisibleFor(@NotNull Generic generic, @NotNull JsclOperation operation) {
return true;
}
@NotNull
@Override
public String getCaption(@NotNull Context context) {
return context.getString(captionId);
}
}
private boolean valid = true;
@Nullable