add Twig block overwrite generator action

src/main/java/fr/adrienbrault/idea/symfony2plugin/Symfony2Icons.java

@@ -74,6 +74,8 @@ public class Symfony2Icons {
     public static final Icon CONFIG_VALUE = IconLoader.getIcon("/icons/config_value.png");
     public static final Icon CONFIG_VALUE_SHORTCUT = IconLoader.getIcon("/icons/config_value_shortcut.png");
 
+    public static final Icon TWIG_BLOCK_OVERWRITE = IconLoader.getIcon("/icons/twig_block_overwrite.png");
+
     public static Image getImage(Icon icon) {
 
         if (icon instanceof ImageIcon) {

src/main/java/fr/adrienbrault/idea/symfony2plugin/templating/action/TwigBlockOverwriteGenerator.java

@@ -0,0 +1,124 @@
+package fr.adrienbrault.idea.symfony2plugin.templating.action;
+
+import com.intellij.codeInsight.CodeInsightActionHandler;
+import com.intellij.codeInsight.actions.CodeInsightAction;
+import com.intellij.codeInsight.hint.HintManager;
+import com.intellij.codeInsight.lookup.LookupElement;
+import com.intellij.openapi.application.ApplicationManager;
+import com.intellij.openapi.command.WriteCommandAction;
+import com.intellij.openapi.editor.Editor;
+import com.intellij.openapi.project.Project;
+import com.intellij.openapi.ui.popup.JBPopupFactory;
+import com.intellij.openapi.util.Pair;
+import com.intellij.psi.PsiElement;
+import com.intellij.psi.PsiFile;
+import com.intellij.psi.impl.source.html.HtmlFileImpl;
+import com.intellij.util.ThrowableRunnable;
+import com.jetbrains.php.completion.insert.PhpInsertHandlerUtil;
+import com.jetbrains.twig.TwigFile;
+import fr.adrienbrault.idea.symfony2plugin.Symfony2ProjectComponent;
+import fr.adrienbrault.idea.symfony2plugin.templating.util.TwigUtil;
+import fr.adrienbrault.idea.symfony2plugin.twig.utils.TwigFileUtil;
+import icons.TwigIcons;
+import org.apache.commons.lang.StringUtils;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.Collection;
+import java.util.List;
+import java.util.function.Function;
+import java.util.stream.Collectors;
+
+/**
+ * @author Daniel Espendiller <daniel@espendiller.net>
+ */
+public class TwigBlockOverwriteGenerator extends CodeInsightAction {
+    @Override
+    protected @NotNull
+    CodeInsightActionHandler getHandler() {
+        return new MyCodeInsightActionHandler();
+    }
+
+    @Override
+    protected boolean isValidForFile(@NotNull Project project, @NotNull Editor editor, @NotNull PsiFile file) {
+        return Symfony2ProjectComponent.isEnabled(project) && (
+            file instanceof TwigFile
+                || (file instanceof HtmlFileImpl && file.getName().toLowerCase().endsWith(".twig"))
+                || getInjectedTwigElement(file, editor) != null
+        );
+    }
+
+    @Nullable
+    private static PsiElement getInjectedTwigElement(@NotNull PsiFile psiFile, @NotNull Editor editor) {
+        int caretOffset = editor.getCaretModel().getOffset();
+        if(caretOffset <= 0) {
+            return null;
+        }
+
+        PsiElement psiElement = psiFile.findElementAt(caretOffset - 1);
+        if(psiElement == null) {
+            return null;
+        }
+
+        return TwigUtil.getElementOnTwigViewProvider(psiElement);
+    }
+
+    private static class MyCodeInsightActionHandler implements CodeInsightActionHandler {
+        @Override
+        public void invoke(@NotNull Project project, @NotNull Editor editor, @NotNull PsiFile file) {
+            int caretOffset = editor.getCaretModel().getOffset();
+            if(caretOffset <= 0) {
+                return;
+            }
+
+            PsiElement psiElement = getInjectedTwigElement(file, editor);
+            if(psiElement == null) {
+                return;
+            }
+
+            // collect blocks in all related files
+            Pair<Collection<PsiFile>, Boolean> scopedContext = TwigUtil.findScopedFile(psiElement);
+
+            Collection<LookupElement> blockLookupElements = TwigUtil.getBlockLookupElements(
+                project,
+                TwigFileUtil.collectParentFiles(scopedContext.getSecond(), scopedContext.getFirst())
+            );
+
+            List<String> items = blockLookupElements.stream()
+                .map(LookupElement::getLookupString)
+                .distinct()
+                .collect(Collectors.toList());
+
+            if (items.size() == 0) {
+                if (!ApplicationManager.getApplication().isHeadlessEnvironment()) {
+                    HintManager.getInstance().showErrorHint(editor, "No block found");
+                }
+
+                return;
+            }
+
+            JBPopupFactory.getInstance().createPopupChooserBuilder(items)
+                .setTitle("Symfony: Twig Blocks")
+                .setItemsChosenCallback(strings -> {
+                    try {
+                        String titleBlocks = StringUtils.abbreviate(strings.stream()
+                            .map((Function<String, String>) s -> s)
+                            .collect(Collectors.joining(", ")), 10);
+
+                        WriteCommandAction.writeCommandAction(editor.getProject())
+                            .withName("Block Overwrite: " + titleBlocks)
+                            .run((ThrowableRunnable<Throwable>) () -> {
+                                String content = strings.stream()
+                                    .map((Function<String, String>) s -> "{% block " + s + " %}{% endblock %}")
+                                    .collect(Collectors.joining("\n"));
+
+                                PhpInsertHandlerUtil.insertStringAtCaret(editor, content);
+                            });
+                    } catch (Throwable ignored) {
+                    }
+                })
+                .createPopup()
+                .showInBestPositionFor(editor);
+        }
+    }
+}

src/main/java/icons/SymfonyIcons.java

@@ -8,4 +8,5 @@ public class SymfonyIcons {
     public static final Icon FormType = Symfony2Icons.FORM_TYPE;
     public static final Icon Translation = Symfony2Icons.TRANSLATION;
     public static final Icon SymfonyToolWindow = Symfony2Icons.SYMFONY_TOOL_WINDOW;
+    public static final Icon TwigBlockOverwrite = Symfony2Icons.TWIG_BLOCK_OVERWRITE;
 }

src/main/resources/META-INF/plugin.xml

@@ -718,6 +718,13 @@
             <add-to-group group-id="GoToTargetEx"/>
         </action>
 
+        <action icon="SymfonyIcons.TwigBlockOverwrite"
+                id="SymfonyTwigBlockOverwrite"
+                class="fr.adrienbrault.idea.symfony2plugin.templating.action.TwigBlockOverwriteGenerator"
+                text="Block Overwrite">
+            <add-to-group group-id="GenerateGroup"/>
+        </action>
+
     </actions>
 </idea-plugin>