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- /*
- * Copyright 2000-2014 Vaadin Ltd.
- *
- * 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.
- */
-
- package com.vaadin.ui;
-
- import com.vaadin.shared.ui.slider.SliderOrientation;
- import com.vaadin.shared.ui.slider.SliderServerRpc;
- import com.vaadin.shared.ui.slider.SliderState;
-
- /**
- * A component for selecting a numerical value within a range.
- *
- * @author Vaadin Ltd.
- */
- public class Slider extends AbstractField<Double> {
-
- private SliderServerRpc rpc = new SliderServerRpc() {
-
- @Override
- public void valueChanged(double value) {
-
- /*
- * Client side updates the state before sending the event so we need
- * to make sure the cached state is updated to match the client. If
- * we do not do this, a reverting setValue() call in a listener will
- * not cause the new state to be sent to the client.
- *
- * See #12133.
- */
- getUI().getConnectorTracker().getDiffState(Slider.this)
- .put("value", value);
-
- try {
- setValue(value, true);
- } catch (final ValueOutOfBoundsException e) {
- // Convert to nearest bound
- double out = e.getValue().doubleValue();
- if (out < getState().minValue) {
- out = getState().minValue;
- }
- if (out > getState().maxValue) {
- out = getState().maxValue;
- }
- Slider.super.setValue(new Double(out), false);
- }
- }
-
- };
-
- /**
- * Default slider constructor. Sets all values to defaults and the slide
- * handle at minimum value.
- *
- */
- public Slider() {
- super();
- registerRpc(rpc);
- super.setValue(new Double(getState().minValue));
- }
-
- /**
- * Create a new slider with the caption given as parameter.
- *
- * The range of the slider is set to 0-100 and only integer values are
- * allowed.
- *
- * @param caption
- * The caption for this slider (e.g. "Volume").
- */
- public Slider(String caption) {
- this();
- setCaption(caption);
- }
-
- /**
- * Create a new slider with the given range and resolution.
- *
- * @param min
- * The minimum value of the slider
- * @param max
- * The maximum value of the slider
- * @param resolution
- * The number of digits after the decimal point.
- */
- public Slider(double min, double max, int resolution) {
- this();
- setMin(min);
- setMax(max);
- setResolution(resolution);
- }
-
- /**
- * Create a new slider with the given range that only allows integer values.
- *
- * @param min
- * The minimum value of the slider
- * @param max
- * The maximum value of the slider
- */
- public Slider(int min, int max) {
- this();
- setMin(min);
- setMax(max);
- setResolution(0);
- }
-
- /**
- * Create a new slider with the given caption and range that only allows
- * integer values.
- *
- * @param caption
- * The caption for the slider
- * @param min
- * The minimum value of the slider
- * @param max
- * The maximum value of the slider
- */
- public Slider(String caption, int min, int max) {
- this(min, max);
- setCaption(caption);
- }
-
- @Override
- public SliderState getState() {
- return (SliderState) super.getState();
- }
-
- @Override
- public SliderState getState(boolean markAsDirty) {
- return (SliderState) super.getState(markAsDirty);
- }
-
- /**
- * Gets the maximum slider value
- *
- * @return the largest value the slider can have
- */
- public double getMax() {
- return getState(false).maxValue;
- }
-
- /**
- * Set the maximum slider value. If the current value of the slider is
- * larger than this, the value is set to the new maximum.
- *
- * @param max
- * The new maximum slider value
- */
- public void setMax(double max) {
- getState().maxValue = max;
- if (getValue() > max) {
- setValue(max);
- }
- }
-
- /**
- * Gets the minimum slider value
- *
- * @return the smallest value the slider can have
- */
- public double getMin() {
- return getState(false).minValue;
- }
-
- /**
- * Set the minimum slider value. If the current value of the slider is
- * smaller than this, the value is set to the new minimum.
- *
- * @param max
- * The new minimum slider value
- */
- public void setMin(double min) {
- getState().minValue = min;
- if (getValue() < min) {
- setValue(min);
- }
- }
-
- /**
- * Get the current orientation of the slider (horizontal or vertical).
- *
- * @return {@link SliderOrientation#HORIZONTAL} or
- * {@link SliderOrientation#VERTICAL}
- */
- public SliderOrientation getOrientation() {
- return getState(false).orientation;
- }
-
- /**
- * Set the orientation of the slider.
- *
- * @param orientation
- * The new orientation, either
- * {@link SliderOrientation#HORIZONTAL} or
- * {@link SliderOrientation#VERTICAL}
- */
- public void setOrientation(SliderOrientation orientation) {
- getState().orientation = orientation;
- }
-
- /**
- * Get the current resolution of the slider. The resolution is the number of
- * digits after the decimal point.
- *
- * @return resolution
- */
- public int getResolution() {
- return getState(false).resolution;
- }
-
- /**
- * Set a new resolution for the slider. The resolution is the number of
- * digits after the decimal point.
- *
- * @throws IllegalArgumentException
- * if resolution is negative.
- *
- * @param resolution
- */
- public void setResolution(int resolution) {
- if (resolution < 0) {
- throw new IllegalArgumentException(
- "Cannot set a negative resolution to Slider");
- }
- getState().resolution = resolution;
- }
-
- /**
- * Sets the value of the slider.
- *
- * @param value
- * The new value of the slider.
- * @param repaintIsNotNeeded
- * If true, client-side is not requested to repaint itself.
- * @throws ValueOutOfBoundsException
- * If the given value is not inside the range of the slider.
- * @see #setMin(double) {@link #setMax(double)}
- */
- @Override
- protected void setValue(Double value, boolean repaintIsNotNeeded) {
- final double v = value.doubleValue();
- final int resolution = getResolution();
- double newValue;
-
- if (resolution > 0) {
- // Round up to resolution
- newValue = (int) (v * Math.pow(10, resolution));
- newValue = newValue / Math.pow(10, resolution);
- if (getMin() > newValue || getMax() < newValue) {
- throw new ValueOutOfBoundsException(value);
- }
- } else {
- newValue = (int) v;
- if (getMin() > newValue || getMax() < newValue) {
- throw new ValueOutOfBoundsException(value);
- }
- }
-
- getState().value = newValue;
- super.setValue(newValue, repaintIsNotNeeded);
- }
-
- @Override
- public void setValue(Double newFieldValue) {
- super.setValue(newFieldValue);
- getState().value = newFieldValue;
- }
-
- /*
- * Overridden to keep the shared state in sync with the AbstractField
- * internal value. Should be removed once AbstractField is refactored to use
- * shared state.
- *
- * See tickets #10921 and #11064.
- */
- @Override
- protected void setInternalValue(Double newValue) {
- super.setInternalValue(newValue);
- if (newValue == null) {
- newValue = 0.0;
- }
- getState().value = newValue;
- }
-
- /**
- * Thrown when the value of the slider is about to be set to a value that is
- * outside the valid range of the slider.
- *
- * @author Vaadin Ltd.
- *
- */
- public class ValueOutOfBoundsException extends RuntimeException {
-
- private final Double value;
-
- /**
- * Constructs an <code>ValueOutOfBoundsException</code> with the
- * specified detail message.
- *
- * @param valueOutOfBounds
- */
- public ValueOutOfBoundsException(Double valueOutOfBounds) {
- value = valueOutOfBounds;
- }
-
- /**
- * Gets the value that is outside the valid range of the slider.
- *
- * @return the value that is out of bounds
- */
- public Double getValue() {
- return value;
- }
- }
-
- @Override
- public Class<Double> getType() {
- return Double.class;
- }
-
- }
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