Java tutorial
/** * Sencha GXT 4.0.0 - Sencha for GWT * Copyright (c) 2006-2015, Sencha Inc. * * licensing@sencha.com * http://www.sencha.com/products/gxt/license/ * * ================================================================================ * Open Source License * ================================================================================ * This version of Sencha GXT is licensed under the terms of the Open Source GPL v3 * license. You may use this license only if you are prepared to distribute and * share the source code of your application under the GPL v3 license: * http://www.gnu.org/licenses/gpl.html * * If you are NOT prepared to distribute and share the source code of your * application under the GPL v3 license, other commercial and oem licenses * are available for an alternate download of Sencha GXT. * * Please see the Sencha GXT Licensing page at: * http://www.sencha.com/products/gxt/license/ * * For clarification or additional options, please contact: * licensing@sencha.com * ================================================================================ * * * ================================================================================ * Disclaimer * ================================================================================ * THIS SOFTWARE IS DISTRIBUTED "AS-IS" WITHOUT ANY WARRANTIES, CONDITIONS AND * REPRESENTATIONS WHETHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE * IMPLIED WARRANTIES AND CONDITIONS OF MERCHANTABILITY, MERCHANTABLE QUALITY, * FITNESS FOR A PARTICULAR PURPOSE, DURABILITY, NON-INFRINGEMENT, PERFORMANCE AND * THOSE ARISING BY STATUTE OR FROM CUSTOM OR USAGE OF TRADE OR COURSE OF DEALING. * ================================================================================ */ package com.sencha.gxt.theme.base.client.field; import com.google.gwt.core.client.GWT; import com.google.gwt.dom.client.Element; import com.google.gwt.dom.client.Style.Unit; import com.google.gwt.resources.client.ClientBundle; import com.google.gwt.resources.client.ImageResource; import com.google.gwt.resources.client.ImageResource.ImageOptions; import com.google.gwt.resources.client.ImageResource.RepeatStyle; import com.google.gwt.safehtml.shared.SafeHtmlBuilder; import com.google.gwt.safehtml.shared.SafeHtmlUtils; import com.sencha.gxt.cell.core.client.form.FieldCell.FieldAppearanceOptions; import com.sencha.gxt.cell.core.client.form.TextAreaInputCell.TextAreaAppearance; import com.sencha.gxt.cell.core.client.form.TextAreaInputCell.TextAreaCellOptions; import com.sencha.gxt.core.client.GXT; import com.sencha.gxt.core.client.dom.XElement; import com.sencha.gxt.core.client.util.Size; import com.sencha.gxt.theme.base.client.field.TextFieldDefaultAppearance.TextFieldStyle; public class TextAreaDefaultAppearance extends ValueBaseFieldDefaultAppearance implements TextAreaAppearance { public interface TextAreaResources extends ValueBaseFieldResources, ClientBundle { @Source({ "ValueBaseField.gss", "TextField.gss", "TextArea.gss" }) TextAreaStyle css(); @ImageOptions(repeatStyle = RepeatStyle.Horizontal) ImageResource textBackground(); } public interface TextAreaStyle extends TextFieldStyle { } private final TextAreaResources res; private final TextAreaStyle style; public TextAreaDefaultAppearance() { this(GWT.<TextAreaResources>create(TextAreaResources.class)); } public TextAreaDefaultAppearance(TextAreaResources resources) { super(resources); this.res = resources; this.style = this.res.css(); } @Override public XElement getInputElement(Element parent) { return parent.getFirstChildElement().getFirstChildElement().cast();// textarea } @Override public void onResize(XElement parent, int width, int height) { Element div = parent.getFirstChildElement(); Size adj = adjustTextAreaSize(width, height); if (width != -1) { div.getStyle().setWidth(width, Unit.PX); width = adj.getWidth(); div.getFirstChildElement().getStyle().setWidth(width, Unit.PX); } if (height != -1) { height = adj.getHeight(); if (height != -1) { div.getFirstChildElement().getStyle().setHeight(height, Unit.PX); } } } @Override public void render(SafeHtmlBuilder sb, String value, FieldAppearanceOptions options) { int width = options.getWidth(); int height = options.getHeight(); boolean empty = false; String name = options.getName() != null ? " name='" + options.getName() + "' " : ""; String disabled = options.isDisabled() ? " disabled=true" : ""; String ro = options.isReadonly() ? " readonly" : ""; String placeholder = options.getEmptyText() != null ? " placeholder='" + SafeHtmlUtils.htmlEscape(options.getEmptyText()) + "' " : ""; if ((value == null || value.equals("")) && options.getEmptyText() != null) { if (GXT.isIE8() || GXT.isIE9()) { value = options.getEmptyText(); } empty = true; } if (width == -1) { width = 150; } String inputStyles = ""; String wrapStyles = ""; Size adjusted = adjustTextAreaSize(width, height); if (width != -1) { wrapStyles += "width:" + width + "px;"; width = adjusted.getWidth(); inputStyles += "width:" + width + "px;"; } if (height != -1) { height = adjusted.getHeight(); inputStyles += "height: " + height + "px;"; } String cls = style.area() + " " + style.field(); if (empty) { cls += " " + style.empty(); } if (options instanceof TextAreaCellOptions) { TextAreaCellOptions opts = (TextAreaCellOptions) options; inputStyles += "resize:" + opts.getResizable().name().toLowerCase() + ";"; } sb.appendHtmlConstant("<div style='" + wrapStyles + "' class='" + style.wrap() + "'>"); sb.appendHtmlConstant("<textarea " + name + disabled + " style='" + inputStyles + "' type='text' class='" + cls + "'" + ro + placeholder + ">"); sb.append(SafeHtmlUtils.fromString(value)); sb.appendHtmlConstant("</textarea></div>"); } protected Size adjustTextAreaSize(int width, int height) { if (width != -1) { // 2px border width -= 2; // 6px margin except for gecko which has 0px margin if (!GXT.isGecko()) { width -= 6; } } if (height != -1) { // 2px border height -= 2; // 2px margin except gecko which has 0px margin if (!GXT.isGecko()) { height -= 2; } } return new Size(width, height); } }