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package com.sksamuel.jqm4gwt.toolbar;
import com.google.gwt.uibinder.client.UiChild;
import com.google.gwt.user.client.ui.Composite;
import com.sksamuel.jqm4gwt.DataIcon;
import com.sksamuel.jqm4gwt.HasJqmHeader;
import com.sksamuel.jqm4gwt.HasText;
import com.sksamuel.jqm4gwt.JQMCommon;
import com.sksamuel.jqm4gwt.JQMPage;
import com.sksamuel.jqm4gwt.button.JQMButton;
import com.sksamuel.jqm4gwt.button.JQMButton.PosOnBand;
/**
* @author Stephen K Samuel [email protected] 4 May 2011 21:21:13
*
* This class models a Jquery Mobile header element.
* It can contain text, and two optional buttons, one left and one right.
*
* See Header structure
*
*/
public class JQMHeader extends JQMToolbar implements HasText, HasJqmHeader {
private static final String BACK_BTN = "data-add-back-btn";
private static final String BACK_BTN_TEXT = "data-back-btn-text";
private static final String BACK_BTN_THEME = "data-back-btn-theme";
/**
* Left button, keep reference so we can replace
*/
private JQMButton left;
/**
* Right button, keep reference so we can replace
*/
private JQMButton right;
/**
* Creates a new {@link JQMHeader} with no text and no automatic
* back button.
*/
public JQMHeader() {
this(null, false);
}
/**
* Create a new {@link JQMHeader} with the given text and no automatic
* back button.
*/
public JQMHeader(String text) {
this(text, false);
}
/**
* Create a new {@link JQMHeader}. If back is true then an automatic back
* button will be created.
*/
public JQMHeader(String text, boolean back) {
super("header", "jqm4gwt-header", text);
setBackButton(back);
}
/**
* Create a new {@link JQMHeader} with the given text and left and right
* buttons
*/
public JQMHeader(String text, JQMButton left, JQMButton right) {
this(text, false);
setLeftButton(left);
setRightButton(right);
}
/**
* Internal method for creating a button
*/
protected JQMButton createButton(String text, String url, DataIcon icon) {
JQMButton button = new JQMButton(text, url);
if (icon != null)
button.withBuiltInIcon(icon);
return button;
}
public JQMButton getLeft() {
return left;
}
public JQMButton getRight() {
return right;
}
/**
* Sets the given button in the left position and sets that buttons role
* to back. Any existing left button will be replaced.
*
* @param button
* the new back button
*/
@UiChild(tagname="backButton", limit=1)
public void setBackButton(JQMButton button) {
button.setBack(true);
setLeftButton(button);
}
/**
* Creates an auto back button with the given text and replaces the
* current left button, if any.
*
* @param text
* the the text for the button
*
* @return the created {@link JQMButton}
*/
public JQMButton setBackButton(String text) {
JQMButton button = new JQMButton(text);
button.withBuiltInIcon(DataIcon.LEFT);
setBackButton(button);
return button;
}
/**
* Sets the left button to be the given button. Any existing button is removed.
*
* @param button - the button to set on the left slot
*/
@UiChild(tagname="leftButton", limit=1)
public void setLeftButton(JQMButton button) {
if (left != null) remove(left);
button.setPosOnBand(PosOnBand.LEFT);
left = button;
insert(left, 0);
}
/**
* Creates a new {@link JQMButton} with the given text and then sets that
* button in the left slot. Any existing right button will be replaced.
*
* This button will not link to a page by default and therefore will only
* react if a click handler is registered. This is useful if you want the
* button to do something other than navigate.
*
* @param text
* the text for the button
*
* @return the created button
*/
public JQMButton setLeftButton(String text) {
return setLeftButton(text, (String) null, (DataIcon) null);
}
/**
* Creates a new {@link JQMButton} with the given text and using the given
* icon and then sets that button in the left slot. Any existing right
* button will be replaced.
*
* This button will not link to a page by default and therefore will only
* react if a click handler is registered. This is useful if you want the
* button to do something other than navigate.
*
* @param text
* the text for the button
* @param icon
* the icon to use or null if no icon is required
*
* @return the created button
*/
public JQMButton setLeftButton(String text, DataIcon icon) {
return setLeftButton(text, (String) null, icon);
}
/**
* Creates a new {@link JQMButton} with the given text and linking to the
* given {@link JQMPage} and then sets that button in the left slot. Any
* existing right button will be replaced.
*
* @param text
* the text for the button
* @param page
* the optional page for the button to link to, if null then
* this button does not navigate by default
*
* @return the created button
*/
public JQMButton setLeftButton(String text, JQMPage page) {
return setLeftButton(text, page, null);
}
/**
* Creates a new {@link JQMButton} with the given text and linking to the
* given {@link JQMPage} and with the given icon and then sets that button
* in the left slot. Any existing right button will be replaced.
*
* @param text
* the text for the button
* @param page
* the optional page for the button to link to, if null then
* this button does not navigate by default
* @param icon
* the icon to use or null if no icon is required
*
* @return the created button
*/
public JQMButton setLeftButton(String text, JQMPage page, DataIcon icon) {
if (page == null)
throw new RuntimeException("page cannot be null");
return setLeftButton(text, "#" + page.getId(), icon);
}
/**
* Creates a new {@link JQMButton} with the given text and linking to the
* given url and then sets that button in the left slot. Any existing
* right button will be replaced.
*
* @param text
* the text for the button
* @param url
* the optional url for the button, if null then this button
* does not navigate by default
*
* @return the created button
*/
public JQMButton setLeftButton(String text, String url) {
return setLeftButton(text, url, null);
}
/**
* Creates a new {@link JQMButton} with the given text and linking to the
* given url and with the given icon and then sets that button in the left
* slot. Any existing right button will be replaced.
*
* @param text
* the text for the button
* @param url
* the optional url for the button, if null then this button
* does not navigate by default
* @param icon
* the icon to use or null if no icon is required
*
* @return the created button
*/
public JQMButton setLeftButton(String text, String url, DataIcon icon) {
JQMButton button = createButton(text, url, icon);
setLeftButton(button);
return button;
}
/**
* Sets the right button to be the given button. Any existing button is removed.
*
* @param button - the button to set on the right slot
*/
@UiChild(tagname="rightButton", limit=1)
public void setRightButton(JQMButton button) {
if (right != null) remove(right);
button.setPosOnBand(PosOnBand.RIGHT);
right = button;
add(right);
}
/**
* Creates a new {@link JQMButton} with the given text and then sets that
* button in the right slot. Any existing right button will be replaced.
*
* This button will not link to a page by default and therefore will only
* react if a click handler is registered. This is useful if you want the
* button to do something other than navigate.
*
* @param text
* the text for the button
*
* @return the created button
*/
public JQMButton setRightButton(String text) {
return setRightButton(text, (String) null, (DataIcon) null);
}
/**
* Creates a new {@link JQMButton} with the given text and using the given
* icon and then sets that button in the right slot. Any existing right
* button will be replaced.
*
* This button will not link to a page by default and therefore will only
* react if a click handler is registered. This is useful if you want the
* button to do something other than navigate.
*
* @param text
* the text for the button
* @param icon
* the icon to use or null if no icon is required
*
* @return the created button
*/
public JQMButton setRightButton(String text, DataIcon icon) {
return setRightButton(text, (String) null, icon);
}
/**
* Creates a new {@link JQMButton} with the given text and linking to the
* given {@link JQMPage} and then sets that button in the right slot. Any
* existing right button will be replaced.
*
* @param text
* the text for the button
* @param page
* the optional page for the button to link to, if null then
* this button does not navigate by default
*
* @return the created button
*/
public JQMButton setRightButton(String text, JQMPage page) {
return setRightButton(text, page, null);
}
/**
* Creates a new {@link JQMButton} with the given text and linking to the
* given {@link JQMPage} and with the given icon and then sets that button
* in the right slot. Any existing right button will be replaced.
*
* @param text
* the text for the button
* @param page
* the optional page for the button to link to, if null then
* this button does not navigate by default
* @param icon
* the icon to use or null if no icon is required
*
* @return the created button
*/
public JQMButton setRightButton(String text, JQMPage page, DataIcon icon) {
return setRightButton(text, "#" + page.getId(), icon);
}
/**
* Creates a new {@link JQMButton} with the given text and linking to the
* given url and then sets that button in the right slot. Any existing
* right button will be replaced.
*
* @param text
* the text for the button
* @param url
* the optional url for the button, if null then this button
* does not navigate by default
*
* @return the created button
*/
public JQMButton setRightButton(String text, String url) {
return setRightButton(text, url, null);
}
/**
* Creates a new {@link JQMButton} with the given text and linking to the
* given url and with the given icon and then sets that button in the
* right slot. Any existing right button will be replaced.
*
* @param text
* the text for the button
* @param url
* the optional url for the button, if null then this button
* does not navigate by default
* @param icon
* the icon to use or null if no icon is required
*
* @return the created button
*/
public JQMButton setRightButton(String text, String url, DataIcon icon) {
JQMButton button = createButton(text, url, icon);
setRightButton(button);
return button;
}
@Override
public JQMHeader withText(String text) {
setText(text);
return this;
}
public boolean isBackButton() {
return "true".equals(JQMCommon.getAttribute(getElement(), BACK_BTN));
}
/**
* Sets whether or not this page should have an auto generated back
* button. If so, it will be placed in the left slot and override any left
* button already there.
*
* If you want a back button in the right, then programatically create a
* button, set it to back using btn.setBack(), and call header.setRightButton(btn) with
* the button as the param.
*/
public void setBackButton(boolean value) {
if (value) {
getElement().setAttribute(BACK_BTN, "true");
} else {
getElement().removeAttribute(BACK_BTN);
}
}
public String getBackButtonText() {
return JQMCommon.getAttribute(getElement(), BACK_BTN_TEXT);
}
public void setBackButtonText(String value) {
JQMCommon.setAttribute(getElement(), BACK_BTN_TEXT, value);
}
public String getBackButtonTheme() {
return JQMCommon.getAttribute(getElement(), BACK_BTN_THEME);
}
public void setBackButtonTheme(String value) {
JQMCommon.setAttribute(getElement(), BACK_BTN_THEME, value);
}
@Override
public JQMHeader getJqmHeader() {
return this;
}
@Override
public Composite getHeaderStage() {
return this;
}
}
