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package org.apache.tapestry.html; |
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import org.apache.hivemind.ApplicationRuntimeException; |
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import org.apache.tapestry.*; |
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import org.apache.tapestry.components.ILinkComponent; |
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import org.apache.tapestry.form.IFormComponent; |
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import org.apache.tapestry.form.LinkSubmit; |
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import java.util.HashMap; |
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import java.util.Map; |
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37 | 0 | public abstract class Rollover extends AbstractComponent |
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{ |
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protected String getAssetURL(IAsset asset) |
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{ |
51 | 0 | if (asset == null) |
52 | 0 | return null; |
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54 | 0 | return asset.buildURL(); |
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} |
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protected void renderComponent(IMarkupWriter writer, IRequestCycle cycle) |
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{ |
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62 | 0 | if (cycle.isRewinding()) |
63 | 0 | return; |
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65 | 0 | String imageURL = null; |
66 | 0 | String mouseOverURL = null; |
67 | 0 | String mouseOutURL = null; |
68 | 0 | boolean dynamic = false; |
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String imageId; |
70 | 0 | boolean linkDisabled = false; |
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72 | 0 | PageRenderSupport pageRenderSupport = TapestryUtils.getPageRenderSupport(cycle, this); |
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74 | 0 | Object serviceLink = cycle.getAttribute(Tapestry.LINK_COMPONENT_ATTRIBUTE_NAME); |
75 | 0 | if (serviceLink == null) |
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{ |
77 | 0 | serviceLink = cycle.getAttribute(LinkSubmit.ATTRIBUTE_NAME); |
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79 | 0 | if (serviceLink != null) |
80 | 0 | linkDisabled = ((IFormComponent) serviceLink).isDisabled(); |
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} else |
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{ |
83 | 0 | linkDisabled = ((ILinkComponent) serviceLink).isDisabled(); |
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} |
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86 | 0 | if (serviceLink == null) |
87 | 0 | throw new ApplicationRuntimeException(Tapestry.getMessage("Rollover.must-be-contained-by-link"), this, null, null); |
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89 | 0 | if (linkDisabled) |
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{ |
91 | 0 | imageURL = getAssetURL(getDisabled()); |
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93 | 0 | if (imageURL == null) |
94 | 0 | imageURL = getAssetURL(getImage()); |
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} |
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else |
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{ |
98 | 0 | imageURL = getAssetURL(getImage()); |
99 | 0 | mouseOverURL = getAssetURL(getMouseOver()); |
100 | 0 | mouseOutURL = getAssetURL(getMouseOut()); |
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102 | 0 | dynamic = (mouseOverURL != null) || (mouseOutURL != null); |
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} |
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105 | 0 | if (imageURL == null) |
106 | 0 | throw Tapestry.createRequiredParameterException(this, "image"); |
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108 | 0 | writer.beginEmpty("img"); |
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110 | 0 | writer.attribute("src", imageURL); |
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112 | 0 | if (dynamic) |
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{ |
114 | 0 | if (mouseOverURL == null) |
115 | 0 | mouseOverURL = imageURL; |
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117 | 0 | if (mouseOutURL == null) |
118 | 0 | mouseOutURL = imageURL; |
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120 | 0 | imageId = writeScript(cycle, pageRenderSupport, serviceLink, mouseOverURL, mouseOutURL); |
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122 | 0 | writer.attribute("id", imageId); |
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} |
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125 | 0 | renderInformalParameters(writer, cycle); |
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127 | 0 | writer.closeTag(); |
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129 | 0 | } |
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public abstract IScript getScript(); |
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private String writeScript(IRequestCycle cycle, PageRenderSupport pageRenderSupport, |
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Object link, String mouseOverImageURL, String mouseOutImageURL) |
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{ |
138 | 0 | String imageId = pageRenderSupport.getUniqueString(getId()); |
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140 | 0 | String preloadedMouseOverImageURL = pageRenderSupport.getPreloadedImageReference(this, mouseOverImageURL); |
141 | 0 | String preloadedMouseOutImageURL = pageRenderSupport.getPreloadedImageReference(this, mouseOutImageURL); |
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143 | 0 | Map symbols = new HashMap(); |
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145 | 0 | symbols.put("link", link); |
146 | 0 | symbols.put("imageId", imageId); |
147 | 0 | symbols.put("mouseOverImageURL", preloadedMouseOverImageURL); |
148 | 0 | symbols.put("mouseOutImageURL", preloadedMouseOutImageURL); |
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150 | 0 | getScript().execute(this, cycle, pageRenderSupport, symbols); |
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152 | 0 | return imageId; |
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} |
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public abstract IAsset getMouseOut(); |
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public abstract IAsset getDisabled(); |
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public abstract IAsset getMouseOver(); |
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public abstract IAsset getImage(); |
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} |