/*
 * Copyright (C) 2010 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.android.browser;

import android.animation.Animator;
import android.animation.Animator.AnimatorListener;
import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.app.Activity;
import android.util.Log;
import android.view.ActionMode;
import android.view.Gravity;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.View;
import android.webkit.WebView;
import android.widget.FrameLayout;

/**
 * Ui for regular phone screen sizes
 */
public class PhoneUi extends BaseUi {

    private static final String LOGTAG = "PhoneUi";
    private static final float NAV_TAB_SCALE = 0.75f;

    private TitleBarPhone mTitleBar;
    private ActiveTabsPage mActiveTabsPage;
    private boolean mUseQuickControls;
    private PieControl mPieControl;
    private NavScreen mNavScreen;

    boolean mExtendedMenuOpen;
    boolean mOptionsMenuOpen;
    boolean mAnimating;

    /**
     * @param browser
     * @param controller
     */
    public PhoneUi(Activity browser, UiController controller) {
        super(browser, controller);
        mTitleBar = new TitleBarPhone(mActivity, mUiController, this,
                mContentView);
        // mTitleBar will be always be shown in the fully loaded mode on
        // phone
        mTitleBar.setProgress(100);
        mActivity.getActionBar().hide();
        setUseQuickControls(BrowserSettings.getInstance().useQuickControls());
    }

    @Override
    public void hideComboView() {
        super.hideComboView();
        mActivity.getActionBar().hide();
    }

    // lifecycle

    @Override
    public void onPause() {
        // FIXME: This removes the active tabs page and resets the menu to
        // MAIN_MENU.  A better solution might be to do this work in onNewIntent
        // but then we would need to save it in onSaveInstanceState and restore
        // it in onCreate/onRestoreInstanceState
        if (mActiveTabsPage != null) {
            mUiController.removeActiveTabsPage(true);
        }
        super.onPause();
    }

    @Override
    public void onDestroy() {
        hideTitleBar();
    }

    @Override
    public void editUrl(boolean clearInput) {
        if (mUseQuickControls) {
            getTitleBar().setShowProgressOnly(false);
        }
        super.editUrl(clearInput);
    }

    @Override
    public boolean onBackKey() {
        if (mActiveTabsPage != null) {
            // if tab page is showing, hide it
            mUiController.removeActiveTabsPage(true);
            return true;
        } else if (mNavScreen != null) {
            mNavScreen.close();
            return true;
        }
        return super.onBackKey();
    }

    @Override
    public boolean dispatchKey(int code, KeyEvent event) {
        if (!isComboViewShowing()) {
            switch (code) {
                case KeyEvent.KEYCODE_MENU:
                    if (mNavScreen == null) {
                        showNavScreen();
                        return true;
                    } else {
                        mNavScreen.close();
                        return true;
                    }
            }
        }
        return false;
    }

    @Override
    public void onProgressChanged(Tab tab) {
        if (tab.inForeground()) {
            int progress = tab.getLoadProgress();
            mTitleBar.setProgress(progress);
            if (progress == 100) {
                if (!mOptionsMenuOpen || !mExtendedMenuOpen) {
                    hideTitleBar();
                    if (mUseQuickControls) {
                        mTitleBar.setShowProgressOnly(false);
                    }
                }
            } else {
                if (!mOptionsMenuOpen || mExtendedMenuOpen) {
                    if (mUseQuickControls && !mTitleBar.isEditingUrl()) {
                        mTitleBar.setShowProgressOnly(true);
                        setTitleGravity(Gravity.TOP);
                    }
                    showTitleBar();
                }
            }
        }
    }

    @Override
    public void setActiveTab(final Tab tab) {
        captureTab(mActiveTab);
        super.setActiveTab(tab, true);
        setActiveTab(tab, true);
    }

    @Override
    void setActiveTab(Tab tab, boolean needsAttaching) {
        BrowserWebView view = (BrowserWebView) tab.getWebView();
        // TabControl.setCurrentTab has been called before this,
        // so the tab is guaranteed to have a webview
        if (view == null) {
            Log.e(LOGTAG, "active tab with no webview detected");
            return;
        }
        // Request focus on the top window.
        if (mUseQuickControls) {
            mPieControl.forceToTop(mContentView);
            view.setScrollListener(null);
        } else {
            // check if title bar is already attached by animation
            if (mTitleBar.getParent() == null) {
                view.setEmbeddedTitleBar(mTitleBar);
            }
        }
        if (tab.isInVoiceSearchMode()) {
            showVoiceTitleBar(tab.getVoiceDisplayTitle(), tab.getVoiceSearchResults());
        } else {
            revertVoiceTitleBar(tab);
        }
        updateLockIconToLatest(tab);
        tab.getTopWindow().requestFocus();
    }

    @Override
    protected TitleBarBase getTitleBar() {
        return mTitleBar;
    }

    // active tabs page

    @Override
    public void showActiveTabsPage() {
        captureTab(mActiveTab);
        mActiveTabsPage = new ActiveTabsPage(mActivity, mUiController);
        mTitleBar.setVisibility(View.GONE);
        hideTitleBar();
        mContentView.addView(mActiveTabsPage, COVER_SCREEN_PARAMS);
        mActiveTabsPage.requestFocus();
    }

    /**
     * Remove the active tabs page.
     */
    @Override
    public void removeActiveTabsPage() {
        mContentView.removeView(mActiveTabsPage);
        mTitleBar.setVisibility(View.VISIBLE);
        mActiveTabsPage = null;
    }

    @Override
    public boolean showsWeb() {
        return super.showsWeb() && mActiveTabsPage == null;
    }

    // menu handling callbacks

    @Override
    public void onContextMenuCreated(Menu menu) {
        hideTitleBar();
    }

    @Override
    public void onContextMenuClosed(Menu menu, boolean inLoad) {
        if (inLoad) {
            showTitleBar();
        }
    }

    // action mode callbacks

    @Override
    public void onActionModeStarted(ActionMode mode) {
        hideTitleBar();
    }

    @Override
    public void onActionModeFinished(boolean inLoad) {
        if (inLoad) {
            if (mUseQuickControls) {
                mTitleBar.setShowProgressOnly(true);
            }
            showTitleBar();
        }
        mActivity.getActionBar().hide();
    }

    @Override
    protected void setTitleGravity(int gravity) {
        if (mUseQuickControls) {
            FrameLayout.LayoutParams lp =
                    (FrameLayout.LayoutParams) getTitleBar().getLayoutParams();
            lp.gravity = gravity;
            getTitleBar().setLayoutParams(lp);
        } else {
            super.setTitleGravity(gravity);
        }
    }

    private void setUseQuickControls(boolean useQuickControls) {
        mUseQuickControls = useQuickControls;
        getTitleBar().setUseQuickControls(mUseQuickControls);
        if (useQuickControls) {
            mPieControl = new PieControl(mActivity, mUiController, this);
            mPieControl.attachToContainer(mContentView);
            WebView web = getWebView();
            if (web != null) {
                web.setEmbeddedTitleBar(null);
            }
        } else {
            if (mPieControl != null) {
                mPieControl.removeFromContainer(mContentView);
            }
            WebView web = getWebView();
            if (web != null) {
                web.setEmbeddedTitleBar(mTitleBar);
            }
            setTitleGravity(Gravity.NO_GRAVITY);
        }
    }

    @Override
    protected void captureTab(final Tab tab) {
        if (tab == null) return;
        if (mUseQuickControls) {
            super.captureTab(tab);
        } else {
            BrowserWebView web = (BrowserWebView) tab.getWebView();
            if (web != null) {
                tab.setScreenshot(web.capture());
            }
        }
    }

    void showNavScreen() {
        if (mAnimating) return;
        mAnimating = true;
        mNavScreen = new NavScreen(mActivity, mUiController, this);
        float yoffset = 0;
        WebView web = getWebView();
        if (web != null) {
            yoffset = mNavScreen.getToolbarHeight() -
                    web.getVisibleTitleHeight();
        }
        // Add the custom view to its container.
        mCustomViewContainer.addView(mNavScreen, COVER_SCREEN_GRAVITY_CENTER);
        mContentView.setLayerType(View.LAYER_TYPE_HARDWARE, null);
        ObjectAnimator animx = ObjectAnimator.ofFloat(mContentView,
                "scaleX", 1.0f, NAV_TAB_SCALE);
        ObjectAnimator animy = ObjectAnimator.ofFloat(mContentView,
                "scaleY", 1.0f, NAV_TAB_SCALE);
        ObjectAnimator translatey = ObjectAnimator.ofFloat(mContentView,
                "translationY", 0, yoffset * NAV_TAB_SCALE);
        AnimatorSet anims = new AnimatorSet();
        anims.setDuration(200);
        anims.addListener(new AnimatorListener() {

            @Override
            public void onAnimationCancel(Animator animation) {
            }

            @Override
            public void onAnimationEnd(Animator animation) {
                finishShowNavScreen();
            }

            @Override
            public void onAnimationRepeat(Animator animation) {
            }

            @Override
            public void onAnimationStart(Animator animation) {
            }
        });
        anims.playTogether(animx, animy, translatey);
        anims.start();
    }

    private void finishShowNavScreen() {
        // Hide the content view.
        mContentView.setLayerType(View.LAYER_TYPE_NONE, null);
        mContentView.setVisibility(View.GONE);
        mContentView.setScaleX(1.0f);
        mContentView.setScaleY(1.0f);
        mContentView.setTranslationY(0);
        BrowserWebView web = (BrowserWebView) getWebView();
        if (web != null) {
            mActiveTab.setScreenshot(web.capture());
        }
        // Finally show the custom view container.
        mCustomViewContainer.setVisibility(View.VISIBLE);
        mCustomViewContainer.bringToFront();
        mAnimating = false;
    }

    void hideNavScreen(boolean animateToPage) {
        if (mAnimating || mNavScreen == null) return;
        mAnimating = true;
        mNavScreen.setLayerType(View.LAYER_TYPE_HARDWARE, null);
        if (animateToPage) {
            float yoffset = 0;
            WebView web = mNavScreen.getSelectedTab().getWebView();
            if (web != null) {
                yoffset = mNavScreen.getToolbarHeight() -
                        web.getVisibleTitleHeight();
            }
            ObjectAnimator animx = ObjectAnimator.ofFloat(mNavScreen, "scaleX",
                    1.0f, 1 / NAV_TAB_SCALE);
            ObjectAnimator animy = ObjectAnimator.ofFloat(mNavScreen, "scaleY",
                    1.0f, 1 / NAV_TAB_SCALE);
            ObjectAnimator translatey = ObjectAnimator.ofFloat(mNavScreen,
                    "translationY", 0, -yoffset);
            AnimatorSet anims = new AnimatorSet();
            anims.setDuration(200);
            anims.addListener(new AnimatorListener() {

                @Override
                public void onAnimationCancel(Animator animation) {
                }

                @Override
                public void onAnimationEnd(Animator animation) {
                    finishHideNavScreen();
                }

                @Override
                public void onAnimationRepeat(Animator animation) {
                }

                @Override
                public void onAnimationStart(Animator animation) {
                }
            });
            anims.playTogether(animx, animy, translatey);
            anims.start();
        } else {
            finishHideNavScreen();
        }

    }

    private void finishHideNavScreen() {
        // Hide the custom view.
        mNavScreen.setVisibility(View.GONE);
        mNavScreen.setLayerType(View.LAYER_TYPE_NONE, null);
        // Remove the custom view from its container.
        mCustomViewContainer.removeView(mNavScreen);
        mNavScreen = null;
        mCustomViewContainer.setVisibility(View.GONE);
        // Show the content view.
        mContentView.setVisibility(View.VISIBLE);
        mAnimating = false;
    }

}