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Commit 13016ea7 authored by stefan-niedermann's avatar stefan-niedermann
Browse files

Implement menu for context based formatting without selected range 



Signed-off-by: default avatarstefan-niedermann <info@niedermann.it>
parent 985a6cd1

app/src/main/java/it/niedermann/owncloud/notes/android/fragment/NoteEditFragment.java

+5 −3
Original line number Diff line number Diff line
@@ -37,11 +37,12 @@ import butterknife.BindView; 
import butterknife.ButterKnife;

import it.niedermann.owncloud.notes.R;

import it.niedermann.owncloud.notes.model.CloudNote;

import it.niedermann.owncloud.notes.util.DisplayUtils;

import it.niedermann.owncloud.notes.model.ISyncCallback;

import it.niedermann.owncloud.notes.util.ContextBasedFormattingCallback;

import it.niedermann.owncloud.notes.util.ContextBasedRangeFormattingCallback;

import it.niedermann.owncloud.notes.util.DisplayUtils;

import it.niedermann.owncloud.notes.util.MarkDownUtil;

import it.niedermann.owncloud.notes.util.NotesTextWatcher;

import it.niedermann.owncloud.notes.util.ContextBasedFormattingCallback;



public class NoteEditFragment extends SearchableBaseNoteFragment {
@@ -175,7 +176,8 @@ public class NoteEditFragment extends SearchableBaseNoteFragment { 
            markdownProcessor.factory(EditFactory.create());

            markdownProcessor.live(editContent);



            editContent.setCustomSelectionActionModeCallback(new ContextBasedFormattingCallback(this.editContent));

            editContent.setCustomSelectionActionModeCallback(new ContextBasedRangeFormattingCallback(this.editContent));

            editContent.setOnCreateContextMenuListener(new ContextBasedFormattingCallback(this.editContent));

            SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(getContext().getApplicationContext());

            editContent.setTextSize(TypedValue.COMPLEX_UNIT_PX, getFontSizeFromPreferences(sp));

            if (sp.getBoolean(getString(R.string.pref_key_font), false)) {

app/src/main/java/it/niedermann/owncloud/notes/util/ContextBasedFormattingCallback.java

+4 −160
Original line number Diff line number Diff line 
package it.niedermann.owncloud.notes.util;



import android.content.ClipData;

import android.content.ClipboardManager;

import android.content.Context;

import android.graphics.Typeface;

import android.text.SpannableStringBuilder;

import android.text.TextUtils;

import android.text.style.StyleSpan;

import android.util.Log;

import android.util.SparseIntArray;

import android.view.ActionMode;

import android.view.Menu;

import android.view.MenuInflater;

import android.view.MenuItem;

import android.view.ContextMenu;

import android.view.View;

import android.widget.EditText;



import java.net.MalformedURLException;

import java.net.URL;

import java.util.Objects;



import it.niedermann.owncloud.notes.R;



import static android.content.Context.CLIPBOARD_SERVICE;



public class ContextBasedFormattingCallback implements ActionMode.Callback {

public class ContextBasedFormattingCallback implements View.OnCreateContextMenuListener {



    private static final String TAG = ContextBasedFormattingCallback.class.getCanonicalName();
@@ -34,144 +15,7 @@ public class ContextBasedFormattingCallback implements ActionMode.Callback { 
    }



    @Override

    public boolean onCreateActionMode(ActionMode mode, Menu menu) {

        MenuInflater inflater = mode.getMenuInflater();

        inflater.inflate(R.menu.style, menu);

        menu.removeItem(android.R.id.selectAll);



        SparseIntArray styleFormatMap = new SparseIntArray();

        styleFormatMap.append(R.id.bold, Typeface.BOLD);

        styleFormatMap.append(R.id.italic, Typeface.ITALIC);



        MenuItem item;

        CharSequence title;

        SpannableStringBuilder ssb;



        for (int i = 0; i < styleFormatMap.size(); i++) {

            item = menu.findItem(styleFormatMap.keyAt(i));

            title = item.getTitle();

            ssb = new SpannableStringBuilder(title);

            ssb.setSpan(new StyleSpan(styleFormatMap.valueAt(i)), 0, title.length(), 0);

            item.setTitle(ssb);

        }



        return true;

    }



    @Override

    public boolean onPrepareActionMode(ActionMode mode, Menu menu) {

        return false;

    }



    @Override

    public boolean onActionItemClicked(ActionMode mode, MenuItem item) {

        int start = editText.getSelectionStart();

        int end = editText.getSelectionEnd();

        SpannableStringBuilder ssb = new SpannableStringBuilder(editText.getText());

        final String markdown;





        switch (item.getItemId()) {

            case R.id.bold: {

                markdown = "**";

                if (hasAlreadyMarkdown(start, end, markdown)) {

                    this.removeMarkdown(ssb, start, end, markdown);

                } else {

                    this.addMarkdown(ssb, start, end, markdown, Typeface.BOLD);

                }

                editText.setText(ssb);

                editText.setSelection(end + markdown.length() * 2);

                return true;

            }

            case R.id.italic: {

                markdown = "*";

                if (hasAlreadyMarkdown(start, end, markdown)) {

                    this.removeMarkdown(ssb, start, end, markdown);

                } else {

                    this.addMarkdown(ssb, start, end, markdown, Typeface.ITALIC);

                }

                editText.setText(ssb);

                editText.setSelection(end + markdown.length() * 2);

                return true;

            }

            case R.id.link: {

                boolean textToFormatIsLink = TextUtils.indexOf(editText.getText().subSequence(start, end), "http") == 0;

                if (textToFormatIsLink) {

                    ssb.insert(end, ")");

                    ssb.insert(start, "[](");

                } else {

                    String clipboardURL = getClipboardURLorNull(editText.getContext());

                    if (clipboardURL != null) {

                        ssb.insert(end, "](" + clipboardURL + ")");

                        end += clipboardURL.length();

                    } else {

                        ssb.insert(end, "]()");

                    }

                    ssb.insert(start, "[");

                }

                end++;

                ssb.setSpan(new StyleSpan(Typeface.NORMAL), start, end, 1);

                editText.setText(ssb);

                if (textToFormatIsLink) {

                    editText.setSelection(start + 1);

                } else {

                    editText.setSelection(end + 2); // after <end>](

                }

                return true;

            }

            case android.R.id.cut: {

                // https://github.com/stefan-niedermann/nextcloud-notes/issues/604

                // https://github.com/stefan-niedermann/nextcloud-notes/issues/477

                try {

                    editText.onTextContextMenuItem(item.getItemId());

                    return true;

                } catch (IndexOutOfBoundsException e) {

                    e.printStackTrace();

                    editText.setSelection(0, 0);

                    editText.clearFocus();

                    return true;

                }

            }

        }

        return false;

    }



    private static String getClipboardURLorNull(Context context) {

        String clipboardURL = null;

        ClipData clipboardData = Objects.requireNonNull(((ClipboardManager) Objects.requireNonNull(context.getSystemService(CLIPBOARD_SERVICE))).getPrimaryClip());

        if (clipboardData.getItemCount() > 0) {

            try {

                clipboardURL = new URL(clipboardData.getItemAt(0).getText().toString()).toString();

            } catch (MalformedURLException e) {

                Log.d(TAG, "Clipboard does not contain a valid URL: " + clipboardURL);

            }

        }

        return clipboardURL;

    }



    @Override

    public void onDestroyActionMode(ActionMode mode) {



    }



    private boolean hasAlreadyMarkdown(int start, int end, String markdown) {

        return start > markdown.length() && markdown.contentEquals(editText.getText().subSequence(start - markdown.length(), start)) &&

                editText.getText().length() > end + markdown.length() && markdown.contentEquals(editText.getText().subSequence(end, end + markdown.length()));

    }



    private void removeMarkdown(SpannableStringBuilder ssb, int start, int end, String markdown) {

        // FIXME disabled, because it does not work properly and might cause data loss

        // ssb.delete(start - markdown.length(), start);

        // ssb.delete(end - markdown.length(), end);

        // ssb.setSpan(new StyleSpan(Typeface.NORMAL), start, end, 1);

    }

    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {



    private void addMarkdown(SpannableStringBuilder ssb, int start, int end, String markdown, int typeface) {

        ssb.insert(end, markdown);

        ssb.insert(start, markdown);

        editText.getText().charAt(start);

        editText.getText().charAt(start + 1);

        end += markdown.length() * 2;

        ssb.setSpan(new StyleSpan(typeface), start, end, 1);

    }

}

app/src/main/java/it/niedermann/owncloud/notes/util/ContextBasedRangeFormattingCallback.java

0 → 100644
+177 −0
Original line number Diff line number Diff line 
package it.niedermann.owncloud.notes.util;



import android.content.ClipData;

import android.content.ClipboardManager;

import android.content.Context;

import android.graphics.Typeface;

import android.text.SpannableStringBuilder;

import android.text.TextUtils;

import android.text.style.StyleSpan;

import android.util.Log;

import android.util.SparseIntArray;

import android.view.ActionMode;

import android.view.Menu;

import android.view.MenuInflater;

import android.view.MenuItem;

import android.widget.EditText;



import java.net.MalformedURLException;

import java.net.URL;

import java.util.Objects;



import it.niedermann.owncloud.notes.R;



import static android.content.Context.CLIPBOARD_SERVICE;



public class ContextBasedRangeFormattingCallback implements ActionMode.Callback {



    private static final String TAG = ContextBasedRangeFormattingCallback.class.getCanonicalName();



    private EditText editText;



    public ContextBasedRangeFormattingCallback(EditText editText) {

        this.editText = editText;

    }



    @Override

    public boolean onCreateActionMode(ActionMode mode, Menu menu) {

        MenuInflater inflater = mode.getMenuInflater();

        inflater.inflate(R.menu.context_based_range_formatting, menu);

        menu.removeItem(android.R.id.selectAll);



        SparseIntArray styleFormatMap = new SparseIntArray();

        styleFormatMap.append(R.id.bold, Typeface.BOLD);

        styleFormatMap.append(R.id.italic, Typeface.ITALIC);



        MenuItem item;

        CharSequence title;

        SpannableStringBuilder ssb;



        for (int i = 0; i < styleFormatMap.size(); i++) {

            item = menu.findItem(styleFormatMap.keyAt(i));

            title = item.getTitle();

            ssb = new SpannableStringBuilder(title);

            ssb.setSpan(new StyleSpan(styleFormatMap.valueAt(i)), 0, title.length(), 0);

            item.setTitle(ssb);

        }



        return true;

    }



    @Override

    public boolean onPrepareActionMode(ActionMode mode, Menu menu) {

        return false;

    }



    @Override

    public boolean onActionItemClicked(ActionMode mode, MenuItem item) {

        int start = editText.getSelectionStart();

        int end = editText.getSelectionEnd();

        SpannableStringBuilder ssb = new SpannableStringBuilder(editText.getText());

        final String markdown;





        switch (item.getItemId()) {

            case R.id.bold: {

                markdown = "**";

                if (hasAlreadyMarkdown(start, end, markdown)) {

                    this.removeMarkdown(ssb, start, end, markdown);

                } else {

                    this.addMarkdown(ssb, start, end, markdown, Typeface.BOLD);

                }

                editText.setText(ssb);

                editText.setSelection(end + markdown.length() * 2);

                return true;

            }

            case R.id.italic: {

                markdown = "*";

                if (hasAlreadyMarkdown(start, end, markdown)) {

                    this.removeMarkdown(ssb, start, end, markdown);

                } else {

                    this.addMarkdown(ssb, start, end, markdown, Typeface.ITALIC);

                }

                editText.setText(ssb);

                editText.setSelection(end + markdown.length() * 2);

                return true;

            }

            case R.id.link: {

                boolean textToFormatIsLink = TextUtils.indexOf(editText.getText().subSequence(start, end), "http") == 0;

                if (textToFormatIsLink) {

                    ssb.insert(end, ")");

                    ssb.insert(start, "[](");

                } else {

                    String clipboardURL = getClipboardURLorNull(editText.getContext());

                    if (clipboardURL != null) {

                        ssb.insert(end, "](" + clipboardURL + ")");

                        end += clipboardURL.length();

                    } else {

                        ssb.insert(end, "]()");

                    }

                    ssb.insert(start, "[");

                }

                end++;

                ssb.setSpan(new StyleSpan(Typeface.NORMAL), start, end, 1);

                editText.setText(ssb);

                if (textToFormatIsLink) {

                    editText.setSelection(start + 1);

                } else {

                    editText.setSelection(end + 2); // after <end>](

                }

                return true;

            }

            case android.R.id.cut: {

                // https://github.com/stefan-niedermann/nextcloud-notes/issues/604

                // https://github.com/stefan-niedermann/nextcloud-notes/issues/477

                try {

                    editText.onTextContextMenuItem(item.getItemId());

                    return true;

                } catch (IndexOutOfBoundsException e) {

                    e.printStackTrace();

                    editText.setSelection(0, 0);

                    editText.clearFocus();

                    return true;

                }

            }

        }

        return false;

    }



    private static String getClipboardURLorNull(Context context) {

        String clipboardURL = null;

        ClipData clipboardData = Objects.requireNonNull(((ClipboardManager) Objects.requireNonNull(context.getSystemService(CLIPBOARD_SERVICE))).getPrimaryClip());

        if (clipboardData.getItemCount() > 0) {

            try {

                clipboardURL = new URL(clipboardData.getItemAt(0).getText().toString()).toString();

            } catch (MalformedURLException e) {

                Log.d(TAG, "Clipboard does not contain a valid URL: " + clipboardURL);

            }

        }

        return clipboardURL;

    }



    @Override

    public void onDestroyActionMode(ActionMode mode) {



    }



    private boolean hasAlreadyMarkdown(int start, int end, String markdown) {

        return start > markdown.length() && markdown.contentEquals(editText.getText().subSequence(start - markdown.length(), start)) &&

                editText.getText().length() > end + markdown.length() && markdown.contentEquals(editText.getText().subSequence(end, end + markdown.length()));

    }



    private void removeMarkdown(SpannableStringBuilder ssb, int start, int end, String markdown) {

        // FIXME disabled, because it does not work properly and might cause data loss

        // ssb.delete(start - markdown.length(), start);

        // ssb.delete(end - markdown.length(), end);

        // ssb.setSpan(new StyleSpan(Typeface.NORMAL), start, end, 1);

    }



    private void addMarkdown(SpannableStringBuilder ssb, int start, int end, String markdown, int typeface) {

        ssb.insert(end, markdown);

        ssb.insert(start, markdown);

        editText.getText().charAt(start);

        editText.getText().charAt(start + 1);

        end += markdown.length() * 2;

        ssb.setSpan(new StyleSpan(typeface), start, end, 1);

    }

}

app/src/main/res/menu/context_based_formatting.xml

0 → 100644
+11 −0
Original line number Diff line number Diff line 
<?xml version="1.0" encoding="utf-8"?>

<menu xmlns:app="http://schemas.android.com/apk/res-auto"

    xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:id="@+id/checkbox"

        android:title="@string/simple_checkbox"

        app:showAsAction="ifRoom" />

    <item android:id="@+id/link"

        android:icon="@drawable/ic_insert_link_black_24dp"

        android:title="@string/simple_link"

        app:showAsAction="ifRoom" />

</menu>
 
 No newline at end of file