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Purpose
This page is a step by step guide to add help to a module. This help will be displayed in the help menu of the SNAP application.
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1 Add the following line to the manifest.mf file
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For example: The layer for the module snap-aatsr-sst the layer file should be placed at org/esa/snap/aatsr/sst/layer.xml
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<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE filesystem PUBLIC "-//NetBeans//DTD Filesystem 1.2//EN" "http://www.netbeans.org/dtds/filesystem-1_2.dtd"> <filesystem> <folder name="Services"> <folder name="JavaHelp"> <file name="<groupId>-<artifactId>-helpset.xml" url="helpset.xml"> <attr name="position" intvalue="3818"/> </file> </folder> </folder> </filesystem> |
Warning |
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The helpset file name must be unique, so we use the filename convention<groupId>-<artifactId>-helpset.xml. Dots in the groupId shall be replaced by dashes '-' |
The "position" defines where the help will appear. To choose a position please refer to the "Menu organisation" bellow
3 Create the helpset.xml next to the layer.xml
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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE helpsetref PUBLIC "-//NetBeans//DTD JavaHelp Help Set Reference 1.0//EN" "http://www.netbeans.org/dtds/helpsetref-1_0.dtd">
<helpsetref url="nbdocs:<groupId>/<artifactId>/docs/help.hs" merge="true"/> |
Warning |
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It is important that the path to helpset is derived from the <groupId> and the <artifactId> as defined in the pom file of the module. For the snap-aatsr-sst module the path must be In this case the term 'snap' is not accidentally duplicated. It is needed. The group Id ends with 'snap'and the artifactId starts with 'snap'. This might be different in your case. |
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toc.xml is the table of content, it lists the pages to display and menu entries, telling what page is displayed where. To add an help page on an existing help menu it has to match the menu organisation bellow. For example, to add a geometric processor the toc.xml file could look like that:
toc.xml
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<?xml version='1.0' encoding='ISO-8859-1' ?> <!DOCTYPE toc PUBLIC "-//Sun Microsystems Inc.//DTD JavaHelp TOC Version 2.0//EN" "http://java.sun.com/products/javahelp/toc_2_0.dtd"> <toc version="2.0" categoryclosedimage="folder" categoryopenimage="folder" topicimage="doc"> <tocitem text="Data Processors"> <tocitem text="Geometric operations"> <tocitem text="My geometric processor" target="myGeometricProcessor"/> </tocitem> </tocitem> </toc> |
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<object classid="java:org.netbeans.modules.javahelp.BrowserDisplayer"> <param name="content" value="https://earth.esa.int/web/guest/pi-community/apply-for-data"> <param name="text" value="<html><u>apply for data</u></html>"> </object> |
Info |
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Remark
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Creating a link between pages of different modules
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<a href="nbdocs://org.esa.snap.snap.help/org/esa/snap/help/docs/general/overview/BeamOverview.html"> |
Resources
Menu organisation
The following tree represents the help menu. When the help menu item is followed by a number, it represents the position of this item as specified in the layer.xml file. The relative position of two items in the same sub-menu is determined by this number, the lowest number goes higher in the menu. These number must be unique.
General: 1000
Overview
Definition
Data Sources
BEAM-DIMAP Format
The 'pconvert' Tool
Application: 2000
Introduction
Menus and Toolbars: 2100
Menus bar
File
Edit
View
Tools
Processing
Window
Help
Toolbar
Product View: 2200
Product Browser
Imaging Tools
Analysis Tools
Import & Export: 2300
Import raster data: 2310
SAR: 2315
GeoTiff: 2320
Spot: 2330
RapidEye: 2331
Envi: 2340
NASA Ocean Color: 2350
Import vector data: 2360
Export raster data: 2370
Other exports: 2380
Extract pixel value: 2395
Tools: 2400
Create band from Math Expression: 2410
Graph Tools: 2420
... (Tools menu)
Plugins
Preference
External Tools: 2480
Command Line Interface: 3000
GPF Overview
GPF Graph Processing Tools
GPF Operator Index
Processors: 4000
Pre-processing: 4010
MERIS L1B Radiometry Correction: 4020
Cloud probability processor: 4025
Geometric Operations: 4100
Collocation: 4110
Image Analysis: 4200
Cluster analysis: 4210
Image analysis: 4220
Land Processing: 4300
NDVI: 4310
SMACS Processor: 4350
Water Processing: 4400
SST Processor: 4410
FLH/MCI Processor: 4420
Level 3 Binning: 4700
SAR Processing: 5000