new interface implementation
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534d76250e
commit
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@ -59,7 +59,7 @@
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calc:textDown="atg" style="@style/digitButtonStyle"
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a:onClick="digitButtonClickHandler"/>
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<org.solovyev.android.view.DirectionDragButton a:id="@+id/muliplicationButton" a:text="*"
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<org.solovyev.android.view.DirectionDragButton a:id="@+id/muliplicationButton" a:text="×"
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calc:textUp="^"
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calc:textDown="^2" style="@style/digitButtonStyle"
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a:onClick="digitButtonClickHandler"/>
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@ -205,7 +205,8 @@ public class CalculatorActivity extends Activity implements FontSizeAdjuster {
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public void pasteButtonClickHandler(@NotNull View v) {
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final ClipboardManager clipboard = (ClipboardManager) getSystemService(CLIPBOARD_SERVICE);
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if ( clipboard.hasText() ) {
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editText.getText().append(clipboard.getText());
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editText.getText().insert(editText.getSelectionStart(), clipboard.getText());
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eval(JsclOperation.numeric, false);
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saveHistoryState();
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}
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}
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@ -1,6 +1,7 @@
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package org.solovyev.android.calculator;
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import org.jetbrains.annotations.NotNull;
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import org.solovyev.util.math.MathEntityType;
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public class Preprocessor {
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@ -11,12 +12,16 @@ public class Preprocessor {
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for (int i = 0; i < s.length(); i++) {
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char ch = s.charAt(i);
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checkMultiplicationSignBeforeFunction(sb, s, i);
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if (ch == '[' || ch == '{') {
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sb.append('(');
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} else if (ch == ']' || ch == '}') {
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sb.append(')');
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} else if (ch == 'π') {
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sb.append("pi");
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} else if (ch == '×' || ch == '∙') {
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sb.append("*");
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} else if (s.startsWith("ln", i)) {
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sb.append("log");
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i += 1;
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@ -41,6 +46,35 @@ public class Preprocessor {
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return sb.toString();
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}
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private static void checkMultiplicationSignBeforeFunction(@NotNull StringBuilder sb, @NotNull String s, int i) {
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if (i > 0) {
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// get character before function
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char chBefore = s.charAt(i - 1);
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char ch = s.charAt(i);
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final MathEntityType mathTypeBefore = MathEntityType.getType(String.valueOf(chBefore));
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final MathEntityType mathType = MathEntityType.getType(String.valueOf(ch));
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if (mathTypeBefore != MathEntityType.binary_operation &&
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mathTypeBefore != MathEntityType.unary_operation &&
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!MathEntityType.openGroupSymbols.contains(chBefore)) {
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if (mathType == MathEntityType.constant) {
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sb.append("*");
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} else if (mathType == MathEntityType.digit && mathTypeBefore != MathEntityType.digit && mathTypeBefore != MathEntityType.dot) {
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sb.append("*");
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} else {
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for (String function : MathEntityType.functions) {
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if (s.startsWith(function, i)) {
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sb.append("*");
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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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public static String wrap(@NotNull JsclOperation operation, @NotNull String s) {
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return operation.name() + "(\"" + s + "\");";
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}
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@ -1,6 +1,8 @@
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package org.solovyev.util.math;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Collections;
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import java.util.List;
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import org.jetbrains.annotations.NotNull;
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@ -9,22 +11,38 @@ import org.jetbrains.annotations.Nullable;
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public enum MathEntityType {
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digit,
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constant,
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dot,
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function,
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unary_operation,
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binary_operation,
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group_symbols,
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group_symbol;
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private static final List<Character> unaryOperations = Arrays.asList('-', '=', '!');
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private static final List<Character> binaryOperations = Arrays.asList('-', '+', '*', '/', '^' );
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public static final List<Character> constants = Arrays.asList('e', 'π');
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private static final List<String> functions = Arrays.asList("sin", "asin", "cos", "acos", "tg", "atg", "log", "ln", "mod", "√");
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private static final List<String> groupSymbols = Arrays.asList("[]", "()", "{}");
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public static final List<Character> dots = Arrays.asList('.', ',');
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private static final List<Character> singleGroupSymbols = Arrays.asList('[', ']', '(', ')', '{', '}');
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public static final List<Character> unaryOperations = Arrays.asList('-', '=', '!');
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public static final List<Character> binaryOperations = Arrays.asList('-', '+', '*', '×', '∙', '/', '^' );
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public static final List<String> functions = Arrays.asList("sin", "asin", "cos", "acos", "tg", "atg", "log", "ln", "mod", "√");
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public static final List<String> groupSymbols = Arrays.asList("[]", "()", "{}");
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public static final List<Character> openGroupSymbols = Arrays.asList('[', '(', '{');
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public static final List<Character> closeGroupSymbols = Arrays.asList(']', ')', '}');
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public static final List<Character> singleGroupSymbols;
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static {
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final List<Character> list = new ArrayList<Character>();
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list.addAll(openGroupSymbols);
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list.addAll(closeGroupSymbols);
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singleGroupSymbols = Collections.unmodifiableList(list);
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}
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@Nullable
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public static MathEntityType getType( @NotNull String s ) {
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MathEntityType result = null;
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@ -40,6 +58,10 @@ public enum MathEntityType {
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result = MathEntityType.binary_operation;
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} else if ( singleGroupSymbols.contains(ch) ) {
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result = MathEntityType.group_symbol;
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} else if ( constants.contains(ch) ) {
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result = MathEntityType.constant;
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} else if ( dots.contains(ch) ) {
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result = MathEntityType.dot;
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}
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}
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