TechTypeTable features

[simantics/district.git] / org.simantics.district.network.ui / src / org / simantics / district / network / ui / techtype / table / TechTypeTableDataProvider.java

diff --git a/org.simantics.district.network.ui/src/org/simantics/district/network/ui/techtype/table/TechTypeTableDataProvider.java b/org.simantics.district.network.ui/src/org/simantics/district/network/ui/techtype/table/TechTypeTableDataProvider.java
new file mode 100644 (file)
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+++ b/org.simantics.district.network.ui/src/org/simantics/district/network/ui/techtype/table/TechTypeTableDataProvider.java
@@ -0,0 +1,161 @@
+package org.simantics.district.network.ui.techtype.table;
+
+import java.io.IOException;
+import java.io.StringReader;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import org.apache.commons.csv.CSVRecord;
+import org.eclipse.nebula.widgets.nattable.data.IDataProvider;
+import org.simantics.district.imports.DistrictImportUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class TechTypeTableDataProvider implements IDataProvider {
+
+    @SuppressWarnings("unused")
+    private final static Logger LOGGER = LoggerFactory.getLogger(TechTypeTableDataProvider.class);
+
+    private List<CSVRecord> records = new ArrayList<>();
+    private List<CSVRecord> filteredRecords = new ArrayList<>();
+    private String filter = "";
+    private List<String> variables = null;
+    private List<String> headers = null;
+
+    public TechTypeTableDataProvider(String data) {
+        // load csv
+        setData(data);
+    }
+
+    public String getVariableName(int columnIndex) {
+        return variables != null && columnIndex < variables.size() ? variables.get(columnIndex) : null;
+    }
+
+    public int getVariableIndex(String variableName) {
+        return variables != null ? variables.indexOf(variableName) : -1;
+    }
+
+    public String getHeaderValue(int columnIndex) {
+        if (headers == null) {
+            return "<empty>";
+        }
+        return headers.get(columnIndex);
+    }
+
+    @Override
+    public Object getDataValue(int columnIndex, int rowIndex) {
+        return filteredRecords.get(rowIndex).get(columnIndex);
+    }
+
+    @Override
+    public void setDataValue(int columnIndex, int rowIndex, Object newValue) {
+
+    }
+
+    @Override
+    public int getColumnCount() {
+        if (records.isEmpty()) {
+            return 0;
+        }
+        return records.get(0).size();
+    }
+
+    @Override
+    public int getRowCount() {
+        return filteredRecords.size() - 1;
+    }
+
+    public boolean isEditable(int columnIndex, int rowIndex) {
+        return false;
+    }
+
+    public void setFilter(String text) {
+        this.filter = text.toLowerCase();
+
+        filteredRecords = records.stream().filter(record -> {
+            for (int i = 0; i < record.size(); i++) {
+                String columnContent = record.get(i);
+                if (columnContent.toLowerCase().contains(filter)) {
+                    return true;
+                }
+            }
+            return false;
+        }).collect(Collectors.toList());
+    }
+
+    /**
+     * Read a CSV file into table contents.
+     * 
+     * Set path to null to create an empty table.
+     * 
+     * @param path  The path of the CSV file to be read.
+     */
+    public void setPath(String path) {
+        records.clear();
+        filteredRecords.clear();
+        if (path != null) {
+            Path techTypeCsv = Paths.get(path);
+            try {
+                DistrictImportUtils.consumeCSV(techTypeCsv, ';', false, record -> {
+                    records.add(record);
+                    return true;
+                });
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+
+        setFilter("");
+    }
+
+    /**
+     * Set table data contents to a given string of CSV data.
+     * 
+     * Set 'data' to null to create an empty table.
+     * 
+     * @param data  The CSV data to be shown in the table.
+     */
+    public void setData(String data) {
+        records.clear();
+        filteredRecords.clear();
+        if (data != null) {
+            long ncommas = data.chars().filter(c -> c == ',').count();
+            long nsemis = data.chars().filter(c -> c == ';').count();
+            char delim = nsemis > ncommas ? ';' : ',';
+            StringReader reader = new StringReader(data);
+            try {
+                DistrictImportUtils.consumeCSV(reader, delim, false, record -> {
+                    records.add(record);
+                    return true;
+                });
+            } catch (IOException e) {
+                LOGGER.error("Error reading CSV file", e);
+                return;
+            }
+
+            CSVRecord header = records.remove(0);
+            CSVRecord units = records.remove(0);
+
+            variables = new ArrayList<>();
+            headers = new ArrayList<>();
+
+            Iterator<String> it = header.iterator();
+            Iterator<String> uit = units.iterator();
+
+            while (it.hasNext()) {
+                String variable = it.next().trim();
+                String unit = uit.hasNext() ? uit.next().trim() : null;
+
+                variables.add(variable);
+                headers.add(variable + (unit != null && !unit.isEmpty() && !(unit.startsWith("(") && unit.endsWith(")")) ? " [" + unit + "]" : ""));
+            }
+        }
+
+        setFilter("");
+    }
+
+}
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