[Bug] IndexOutOfBoundsException in case when entered no fields during ui form generation

[Iamwade]

Describe the bug (*)

1. Click
   
2. Reproduced when number of entered "Field" = 0
   

java.lang.IndexOutOfBoundsException: Index 0 out of bounds for length 0
	at java.base/jdk.internal.util.Preconditions.outOfBounds(Preconditions.java:64)
	at java.base/jdk.internal.util.Preconditions.outOfBoundsCheckIndex(Preconditions.java:70)
	at java.base/jdk.internal.util.Preconditions.checkIndex(Preconditions.java:248)
	at java.base/java.util.Objects.checkIndex(Objects.java:372)
	at java.base/java.util.ArrayList.get(ArrayList.java:459)
	at com.magento.idea.magento2plugin.actions.generation.generator.UiComponentFormGenerator.fillAttributes(UiComponentFormGenerator.java:168)
	at com.magento.idea.magento2plugin.actions.generation.generator.FileGenerator.getAttributes(FileGenerator.java:57)
	at com.magento.idea.magento2plugin.actions.generation.generator.UiComponentFormGenerator.createForm(UiComponentFormGenerator.java:130)
	at com.magento.idea.magento2plugin.actions.generation.generator.UiComponentFormGenerator.generate(UiComponentFormGenerator.java:60)
	at com.magento.idea.magento2plugin.actions.generation.generator.FileGenerator.generate(FileGenerator.java:41)
	at com.magento.idea.magento2plugin.actions.generation.dialog.NewUiComponentFormDialog.generateFormFile(NewUiComponentFormDialog.java:458)
	at com.magento.idea.magento2plugin.actions.generation.dialog.NewUiComponentFormDialog.onOK(NewUiComponentFormDialog.java:425)
	at com.magento.idea.magento2plugin.actions.generation.dialog.NewUiComponentFormDialog.lambda$new$0(NewUiComponentFormDialog.java:216)
	at java.desktop/javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1967)
	at java.desktop/javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2308)
	at java.desktop/javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:405)
	at java.desktop/javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:262)
	at java.desktop/javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:270)
	at java.desktop/java.awt.Component.processMouseEvent(Component.java:6652)
	at java.desktop/javax.swing.JComponent.processMouseEvent(JComponent.java:3345)
	at java.desktop/java.awt.Component.processEvent(Component.java:6417)
	at java.desktop/java.awt.Container.processEvent(Container.java:2263)
	at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:5027)
	at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2321)
	at java.desktop/java.awt.Component.dispatchEvent(Component.java:4859)
	at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4918)
	at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Container.java:4547)
	at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Container.java:4488)
	at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2307)
	at java.desktop/java.awt.Window.dispatchEventImpl(Window.java:2784)
	at java.desktop/java.awt.Component.dispatchEvent(Component.java:4859)
	at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:778)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:727)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:721)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:95)
	at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:751)
	at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:749)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
	at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:748)
	at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:887)
	at com.intellij.ide.IdeEventQueue.dispatchMouseEvent(IdeEventQueue.java:816)
	at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:753)
	at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$7(IdeEventQueue.java:443)
	at com.intellij.openapi.progress.impl.CoreProgressManager.computePrioritized(CoreProgressManager.java:825)
	at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$8(IdeEventQueue.java:442)
	at com.intellij.openapi.application.impl.ApplicationImpl.runIntendedWriteActionOnCurrentThread(ApplicationImpl.java:794)
	at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:494)
	at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:117)
	at java.desktop/java.awt.WaitDispatchSupport$2.run(WaitDispatchSupport.java:190)
	at java.desktop/java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:235)
	at java.desktop/java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:233)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.desktop/java.awt.WaitDispatchSupport.enter(WaitDispatchSupport.java:233)
	at java.desktop/java.awt.Dialog.show(Dialog.java:1063)
	at java.desktop/java.awt.Component.show(Component.java:1732)
	at java.desktop/java.awt.Component.setVisible(Component.java:1679)
	at java.desktop/java.awt.Window.setVisible(Window.java:1032)
	at java.desktop/java.awt.Dialog.setVisible(Dialog.java:998)
	at com.magento.idea.magento2plugin.actions.generation.dialog.NewUiComponentFormDialog.open(NewUiComponentFormDialog.java:403)
	at com.magento.idea.magento2plugin.actions.generation.NewUiComponentFormAction.actionPerformed(NewUiComponentFormAction.java:49)
	at com.intellij.openapi.actionSystem.ex.ActionUtil.lambda$performActionDumbAwareWithCallbacks$4(ActionUtil.java:240)
	at com.intellij.openapi.actionSystem.ex.ActionUtil.performDumbAwareWithCallbacks(ActionUtil.java:261)
	at com.intellij.openapi.actionSystem.ex.ActionUtil.performActionDumbAwareWithCallbacks(ActionUtil.java:240)
	at com.intellij.openapi.actionSystem.impl.ActionMenuItem$ActionTransmitter.lambda$actionPerformed$0(ActionMenuItem.java:248)
	at com.intellij.openapi.wm.impl.FocusManagerImpl

To Reproduce (*)

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2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior (*)

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Screenshots

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Please complete the following information: (*)

• OS: Mac OS X 10.16
• PhpStorm/Intellij version: 2021.2.1
• Plugin Version: 4.2.2

Additional context

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[m2-assistant]

Hi @Iamwade. Thank you for your report.
To speed up processing of this issue, make sure that you provided sufficient information.

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[Iamwade]

@magento I am working on this

[bohdan-harniuk]

Hello, @Iamwade!

Thank you for your report and for solving this issue!