litesoft
@ 917
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package org.litesoft.GWT.client.widgets.sliderbar.client.view; import java.util.ArrayList; import com.google.gwt.event.dom.client.MouseEvent; import com.google.gwt.event.shared.HandlerRegistration; import com.google.gwt.user.client.DOM; import com.google.gwt.user.client.ui.FocusPanel; import com.google.gwt.user.client.ui.Widget; import org.litesoft.GWT.client.widgets.sliderbar.client.event.BarValueChangedHandler; import org.litesoft.GWT.client.widgets.sliderbar.client.exception.WidgetNotFoundError; import org.litesoft.GWT.client.widgets.sliderbar.client.presenter.Display; import org.litesoft.GWT.client.widgets.sliderbar.client.presenter.Presenter; import org.litesoft.GWT.client.widgets.sliderbar.client.presenter.Presenter.Orientation; /** * * @author kiouri * The base class for Horizontal and Vertical SliderBar * */ public abstract class SliderBar extends FocusPanel implements Display{ protected Widget scale, drag; protected int scaleSize, startPosition, delimSize; protected ArrayList<Widget> less = new ArrayList<Widget>(), more = new ArrayList<Widget>(), orderedWidgets = new ArrayList<Widget>(); protected TouchableAbsolutePanelPK absPanel = new TouchableAbsolutePanelPK(); protected boolean isMarksPlaced = false, wasInited = false; protected String color; protected Presenter presenter; public SliderBar(){ presenter = new Presenter(this, getOrientation()); this.add(absPanel); } public SliderBar(Presenter presenter){ if (presenter == null){ this.presenter = new Presenter(this, getOrientation()); } else { this.presenter = presenter; presenter.setDislay(this); } this.add(absPanel); } /** * @return knob widget */ public Widget getDragWidget() { return drag; } /** * Sets knob visible. Knob becomes invisible if maxValue equals zero. */ public void setDragVisible(boolean isVisible){ if (drag != null){ drag.setVisible(isVisible); } } /** * @return list of buttons that increase the current value (knob moves right or down) */ public ArrayList<Widget> getLessWidgets() { return less; } /** * @return list of buttons that reduce the current value (knob moves left or up) */ public ArrayList<Widget> getMoreWidgets() { return more; } public Widget getScaleWidget() { return scale; } protected int getStartPosition() { return this.startPosition; } /** * Sets the button for increase the current value (knob moves right or down) * @param moreWidget - widget which supports handling of onMouseClick event */ protected void setMoreWidget(Widget moreWidget){ orderedWidgets.add(moreWidget); more.add(moreWidget); } /** * Sets the button for decrease the current value (knob moves left or up) * @param moreWidget - widget which supports handling of onMouseClick event */ protected void setLessWidget(Widget lessWidget){ orderedWidgets.add(lessWidget); less.add(lessWidget); } /** * * @param drag - widget for knob representing */ protected void setDragWidget(Widget drag){ this.drag = drag; } /** * * @param scaleWidget - widget for scale representing * @param scaleSize - height of scale for horizontal sliderbar * or width of scale for vertical sliderbar.<br> * It is possible to adjust thickness of scale with help of this parameter. * */ protected void setScaleWidget(Widget scaleWidget, int scaleSize){ orderedWidgets.add(scaleWidget); this.scale = scaleWidget; this.scaleSize = scaleSize; } public Widget getRootWidget() { return this; } /** * With help of this method it is possible to control appearance of outline border around the sliderbar when sliderbar is in focus. */ public void setNotSelectedInFocus(){ DOM.setStyleAttribute(this.getElement(), "outline", "0px"); } /** * With help of this method it is possible to draw marks of discret positions of knob on scale * @param color - color of marks * @param delimSize - height of marks for horizontal sliderbar or width of marks for vertical sliderbar */ public void drawMarks( String color, int delimSize ){ if (!isMarksPlaced){ this.color = color; this.delimSize = delimSize; presenter.drawMarks(color, delimSize); isMarksPlaced = true; } } /** * Remove scale marks from sliderbar */ public void removeMarks(){ int childCount = absPanel.getWidgetCount(); for (int i = 0; i < childCount; i++){ Widget widget = absPanel.getWidget(i); if (widget instanceof Mark){ absPanel.remove(i); childCount--; i--; } } isMarksPlaced = false; } /** * Adds BarValueChangedHandler (for handling changes of knob position) * @param barValueChangedHandler * @return HandlerRegistration used to remove this handler */ public HandlerRegistration addBarValueChangedHandler( BarValueChangedHandler barValueChangedHandler) { return presenter.addBarValueChangedHandler(barValueChangedHandler); } /** * Sets current value. Knob will be moved to correspond position. * @param value */ public void setValue(int value){ presenter.setValue(value); } protected void prepare(int maxValue, int pixelSize){ drawScrollBar(pixelSize); presenter.setMaxValue(maxValue); presenter.setAbsMaxLength(getAbsMaxLength()); presenter.processParams(); presenter.setValue(getValue()); } /** * * @return max possible value which knob may point to. This value corresponds to rightmost knob position for horizontal sliderbar or * bottommost knob position for vertical sliderbar */ public int getMaxValue(){ return presenter.getMaxValue(); } /** * Sets value which corresponds to rightmost position of knob for horizontal sliderbar o bottommost position * for vertical sliderbar. * @param maxValue */ public void setMaxValue(int maxValue) { presenter.setMaxValue(maxValue); presenter.processParams(); try { if (isMarksPlaced) { this.removeMarks(); this.drawMarks(color, delimSize); } setValue(getValue()); } catch (Exception e) { } } public void processParams(){ presenter.processParams(); if (isMarksPlaced){ isMarksPlaced = false; this.drawMarks(color, delimSize); } } /** * Returns the value which corresponds to current position of knob * @return */ public int getValue(){ return presenter.getValue(); } protected void onLoad() { super.onLoad(); if (drag == null){ throw new WidgetNotFoundError("Drag widget not found..."); } if (scale == null){ throw new WidgetNotFoundError("Scale widget not found..."); } if (!wasInited) { presenter.bind(); wasInited = true; } if (this.getOrientation() == Orientation.HORIZONTAL) { this.prepare(presenter.getMaxValue(), this.getOffsetWidth()); } else { this.prepare(presenter.getMaxValue(), this.getOffsetHeight()); } reDrawMarks(); } protected void reDrawMarks(){ if (isMarksPlaced) { this.removeMarks(); this.drawMarks(color, delimSize); } } protected void putWidgetsToAbsPanel(){ for (int i = 0; i < orderedWidgets.size(); i++){ absPanel.add(orderedWidgets.get(i)); } this.absPanel.add(drag, 0,0); DOM.setStyleAttribute(drag.getElement(), "zIndex", "500"); } /** * Sets minimal distance between scale marks in pixels. If distance between marks will be less then this value - marks will not be drowning. * @param minMarkStep */ public void setMinMarkStep(int minMarkStep){ presenter.setMinMarkStep(minMarkStep); } } |
Commits for litesoft/trunk/Java/GWT/Client/src/org/litesoft/GWT/client/widgets/sliderbar/client/view/SliderBar.java
Revision | Author | Commited | Message |
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917 | GeorgeS | Sun 08 Dec, 2013 20:49:56 +0000 | 1.7 prep & VersionedStaticContentFilter upgrade to new “/ver” model! |