com.intellij.android.designer.model.layout.actions.AssignWeightAction.java Source code

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Here is the source code for com.intellij.android.designer.model.layout.actions.AssignWeightAction.java

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/*
 * Copyright (C) 2013 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.intellij.android.designer.model.layout.actions;

import com.intellij.android.designer.model.RadViewComponent;
import com.intellij.designer.designSurface.DesignerEditorPanel;
import com.intellij.openapi.actionSystem.AnActionEvent;
import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.ui.InputValidator;
import com.intellij.openapi.ui.Messages;
import com.intellij.util.ThrowableRunnable;
import icons.AndroidDesignerIcons;
import org.jetbrains.annotations.NotNull;

import java.util.List;

import static com.android.SdkConstants.ANDROID_URI;
import static com.android.SdkConstants.ATTR_LAYOUT_WEIGHT;

public class AssignWeightAction extends LayoutAction {
    private final RadViewComponent myLayout;
    private final List<? extends RadViewComponent> mySelectedChildren;

    public AssignWeightAction(@NotNull DesignerEditorPanel designer, @NotNull RadViewComponent layout,
            @NotNull List<? extends RadViewComponent> selectedChildren) {
        super(designer, "Change Layout Weight", null, AndroidDesignerIcons.Weights);
        myLayout = layout;
        mySelectedChildren = selectedChildren;
    }

    @Override
    public void actionPerformed(AnActionEvent e) {
        final List<? extends RadViewComponent> targets = mySelectedChildren;
        if (targets.isEmpty()) {
            return;
        }
        String currentWeight = targets.get(0).getTag().getAttributeValue(ATTR_LAYOUT_WEIGHT, ANDROID_URI);
        if (currentWeight == null || currentWeight.isEmpty()) {
            currentWeight = "0.0";
        }

        String title = getTemplatePresentation().getDescription();
        InputValidator validator = null; // TODO: Number validation!
        final String weight = Messages.showInputDialog(myDesigner, "Enter Weight Value:", title, null,
                currentWeight, validator);
        if (weight != null) {

            myDesigner.getToolProvider().execute(new ThrowableRunnable<Exception>() {
                @Override
                public void run() throws Exception {
                    ApplicationManager.getApplication().runWriteAction(new Runnable() {
                        @Override
                        public void run() {
                            if (weight.isEmpty()) {
                                // Remove attributes
                                ClearWeightsAction.clearWeights(myLayout, targets);
                            } else {
                                for (RadViewComponent target : targets) {
                                    target.getTag().setAttribute(ATTR_LAYOUT_WEIGHT, ANDROID_URI, weight);
                                }
                            }
                        }
                    });
                }
            }, getTemplatePresentation().getDescription(), true);
        }
    }

    @Override
    protected void performWriteAction() {
        // We want to open the UI input dialog outside the write lock, so we handle the locking on our own in actionPerformed
        assert false;
    }
}